Home / 1,228,325,852.70-1,842,488,779.05-815,077,331.10

Finding the Fourth Proportional to 1,228,325,852.70, 1,842,488,779.05 and 815,077,331.10

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Solution

The fourth proportional to 1,228,325,852.70, 1,842,488,779.05 and 815,077,331.10 is: 1,222,615,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,325,852.70 : 1,842,488,779.05 = 815,077,331.10 : x
  2. Step 2: Convert to fraction form
    1,228,325,852.70/1,842,488,779.05 = 815,077,331.10/x
  3. Step 3: Cross multiply
    1,228,325,852.70x = 1,842,488,779.05 × 815,077,331.10
  4. Step 4: Simplify right side
    1,228,325,852.70x = 1,501,770,836,609,771,520
  5. Step 5: Solve for x
    x = 1,501,770,836,609,771,520/1,228,325,852.70
  6. Step 6: Final answer
    x = 1,222,615,996.65

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.