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Finding the Fourth Proportional to 610,359.91, 915,352.85 and 422,030.50

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Solution

The fourth proportional to 610,359.91, 915,352.85 and 422,030.50 is: 632,916.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,359.91 : 915,352.85 = 422,030.50 : x
  2. Step 2: Convert to fraction form
    610,359.91/915,352.85 = 422,030.50/x
  3. Step 3: Cross multiply
    610,359.91x = 915,352.85 × 422,030.50
  4. Step 4: Simplify right side
    610,359.91x = 386,306,819,728.62
  5. Step 5: Solve for x
    x = 386,306,819,728.62/610,359.91
  6. Step 6: Final answer
    x = 632,916.44

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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.