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Finding the Fourth Proportional to 717,525, 990,184.50 and 395,234.10

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Solution

The fourth proportional to 717,525, 990,184.50 and 395,234.10 is: 545,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,525 : 990,184.50 = 395,234.10 : x
  2. Step 2: Convert to fraction form
    717,525/990,184.50 = 395,234.10/x
  3. Step 3: Cross multiply
    717,525x = 990,184.50 × 395,234.10
  4. Step 4: Simplify right side
    717,525x = 391,354,679,691.45
  5. Step 5: Solve for x
    x = 391,354,679,691.45/717,525
  6. Step 6: Final answer
    x = 545,423.06

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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.