Home / 1,287,020.35-1,929,773.53-488,358.02

Finding the Fourth Proportional to 1,287,020.35, 1,929,773.53 and 488,358.02

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Solution

The fourth proportional to 1,287,020.35, 1,929,773.53 and 488,358.02 is: 732,249.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,020.35 : 1,929,773.53 = 488,358.02 : x
  2. Step 2: Convert to fraction form
    1,287,020.35/1,929,773.53 = 488,358.02/x
  3. Step 3: Cross multiply
    1,287,020.35x = 1,929,773.53 × 488,358.02
  4. Step 4: Simplify right side
    1,287,020.35x = 942,420,368,068.55
  5. Step 5: Solve for x
    x = 942,420,368,068.55/1,287,020.35
  6. Step 6: Final answer
    x = 732,249.78

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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.