Home / 1,490,751,018.70-2,236,126,528.05-509,285,779.90

Finding the Fourth Proportional to 1,490,751,018.70, 2,236,126,528.05 and 509,285,779.90

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Solution

The fourth proportional to 1,490,751,018.70, 2,236,126,528.05 and 509,285,779.90 is: 763,928,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,751,018.70 : 2,236,126,528.05 = 509,285,779.90 : x
  2. Step 2: Convert to fraction form
    1,490,751,018.70/2,236,126,528.05 = 509,285,779.90/x
  3. Step 3: Cross multiply
    1,490,751,018.70x = 2,236,126,528.05 × 509,285,779.90
  4. Step 4: Simplify right side
    1,490,751,018.70x = 1,138,827,442,793,023,488
  5. Step 5: Solve for x
    x = 1,138,827,442,793,023,488/1,490,751,018.70
  6. Step 6: Final answer
    x = 763,928,669.85

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Double scale
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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.