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Finding the Fourth Proportional to 610,397.52, 915,409.08 and 422,068.02

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Solution

The fourth proportional to 610,397.52, 915,409.08 and 422,068.02 is: 632,972.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,397.52 : 915,409.08 = 422,068.02 : x
  2. Step 2: Convert to fraction form
    610,397.52/915,409.08 = 422,068.02/x
  3. Step 3: Cross multiply
    610,397.52x = 915,409.08 × 422,068.02
  4. Step 4: Simplify right side
    610,397.52x = 386,364,897,885.62
  5. Step 5: Solve for x
    x = 386,364,897,885.62/610,397.52
  6. Step 6: Final answer
    x = 632,972.59

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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.