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Finding the Fourth Proportional to 610,149.28, 915,236.04 and 429,495.84

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Solution

The fourth proportional to 610,149.28, 915,236.04 and 429,495.84 is: 644,252.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,149.28 : 915,236.04 = 429,495.84 : x
  2. Step 2: Convert to fraction form
    610,149.28/915,236.04 = 429,495.84/x
  3. Step 3: Cross multiply
    610,149.28x = 915,236.04 × 429,495.84
  4. Step 4: Simplify right side
    610,149.28x = 393,090,071,798.07
  5. Step 5: Solve for x
    x = 393,090,071,798.07/610,149.28
  6. Step 6: Final answer
    x = 644,252.29

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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.