Home / 672,012.80-1,008,019.20-618,358.40

Finding the Fourth Proportional to 672,012.80, 1,008,019.20 and 618,358.40

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Solution

The fourth proportional to 672,012.80, 1,008,019.20 and 618,358.40 is: 927,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,012.80 : 1,008,019.20 = 618,358.40 : x
  2. Step 2: Convert to fraction form
    672,012.80/1,008,019.20 = 618,358.40/x
  3. Step 3: Cross multiply
    672,012.80x = 1,008,019.20 × 618,358.40
  4. Step 4: Simplify right side
    672,012.80x = 623,317,139,681.28
  5. Step 5: Solve for x
    x = 623,317,139,681.28/672,012.80
  6. Step 6: Final answer
    x = 927,537.60

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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.