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Finding the Fourth Proportional to 610,705.71, 915,205.23 and 520,277.31

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Solution

The fourth proportional to 610,705.71, 915,205.23 and 520,277.31 is: 779,688.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,705.71 : 915,205.23 = 520,277.31 : x
  2. Step 2: Convert to fraction form
    610,705.71/915,205.23 = 520,277.31/x
  3. Step 3: Cross multiply
    610,705.71x = 915,205.23 × 520,277.31
  4. Step 4: Simplify right side
    610,705.71x = 476,160,515,162.33
  5. Step 5: Solve for x
    x = 476,160,515,162.33/610,705.71
  6. Step 6: Final answer
    x = 779,688.98

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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.