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Finding the Fourth Proportional to 636,001.72, 877,697.58 and 349,549

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Solution

The fourth proportional to 636,001.72, 877,697.58 and 349,549 is: 482,385.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,001.72 : 877,697.58 = 349,549 : x
  2. Step 2: Convert to fraction form
    636,001.72/877,697.58 = 349,549/x
  3. Step 3: Cross multiply
    636,001.72x = 877,697.58 × 349,549
  4. Step 4: Simplify right side
    636,001.72x = 306,798,311,391.42
  5. Step 5: Solve for x
    x = 306,798,311,391.42/636,001.72
  6. Step 6: Final answer
    x = 482,385.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.