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Finding the Fourth Proportional to 749,668, 1,124,503.08 and 306,436

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Solution

The fourth proportional to 749,668, 1,124,503.08 and 306,436 is: 459,654.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,668 : 1,124,503.08 = 306,436 : x
  2. Step 2: Convert to fraction form
    749,668/1,124,503.08 = 306,436/x
  3. Step 3: Cross multiply
    749,668x = 1,124,503.08 × 306,436
  4. Step 4: Simplify right side
    749,668x = 344,588,225,822.88
  5. Step 5: Solve for x
    x = 344,588,225,822.88/749,668
  6. Step 6: Final answer
    x = 459,654.44

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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.