Home / 641,927.20-961,969.20-472,122.40

Finding the Fourth Proportional to 641,927.20, 961,969.20 and 472,122.40

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Solution

The fourth proportional to 641,927.20, 961,969.20 and 472,122.40 is: 707,505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,927.20 : 961,969.20 = 472,122.40 : x
  2. Step 2: Convert to fraction form
    641,927.20/961,969.20 = 472,122.40/x
  3. Step 3: Cross multiply
    641,927.20x = 961,969.20 × 472,122.40
  4. Step 4: Simplify right side
    641,927.20x = 454,167,207,430.08
  5. Step 5: Solve for x
    x = 454,167,207,430.08/641,927.20
  6. Step 6: Final answer
    x = 707,505.78

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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.