Home / 641,928.70-961,971.45-472,123.90

Finding the Fourth Proportional to 641,928.70, 961,971.45 and 472,123.90

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Solution

The fourth proportional to 641,928.70, 961,971.45 and 472,123.90 is: 707,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,928.70 : 961,971.45 = 472,123.90 : x
  2. Step 2: Convert to fraction form
    641,928.70/961,971.45 = 472,123.90/x
  3. Step 3: Cross multiply
    641,928.70x = 961,971.45 × 472,123.90
  4. Step 4: Simplify right side
    641,928.70x = 454,169,712,662.66
  5. Step 5: Solve for x
    x = 454,169,712,662.66/641,928.70
  6. Step 6: Final answer
    x = 707,508.03

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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.