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Finding the Fourth Proportional to 478,206.65, 715,754.78 and 372,453.05

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Solution

The fourth proportional to 478,206.65, 715,754.78 and 372,453.05 is: 557,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,206.65 : 715,754.78 = 372,453.05 : x
  2. Step 2: Convert to fraction form
    478,206.65/715,754.78 = 372,453.05/x
  3. Step 3: Cross multiply
    478,206.65x = 715,754.78 × 372,453.05
  4. Step 4: Simplify right side
    478,206.65x = 266,585,049,000.81
  5. Step 5: Solve for x
    x = 266,585,049,000.81/478,206.65
  6. Step 6: Final answer
    x = 557,468.30

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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.