Home / 657,951.20-987,315.60-480,010.40

Finding the Fourth Proportional to 657,951.20, 987,315.60 and 480,010.40

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Solution

The fourth proportional to 657,951.20, 987,315.60 and 480,010.40 is: 720,299.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,951.20 : 987,315.60 = 480,010.40 : x
  2. Step 2: Convert to fraction form
    657,951.20/987,315.60 = 480,010.40/x
  3. Step 3: Cross multiply
    657,951.20x = 987,315.60 × 480,010.40
  4. Step 4: Simplify right side
    657,951.20x = 473,921,756,082.24
  5. Step 5: Solve for x
    x = 473,921,756,082.24/657,951.20
  6. Step 6: Final answer
    x = 720,299.25

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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.