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Finding the Fourth Proportional to 478,538.40, 717,807.60 and 434,251.65

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Solution

The fourth proportional to 478,538.40, 717,807.60 and 434,251.65 is: 651,377.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,538.40 : 717,807.60 = 434,251.65 : x
  2. Step 2: Convert to fraction form
    478,538.40/717,807.60 = 434,251.65/x
  3. Step 3: Cross multiply
    478,538.40x = 717,807.60 × 434,251.65
  4. Step 4: Simplify right side
    478,538.40x = 311,709,134,682.54
  5. Step 5: Solve for x
    x = 311,709,134,682.54/478,538.40
  6. Step 6: Final answer
    x = 651,377.48

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Similar ratio
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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.