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Finding the Fourth Proportional to 478,872.47, 718,308.71 and 454,926.87

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Solution

The fourth proportional to 478,872.47, 718,308.71 and 454,926.87 is: 682,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,872.47 : 718,308.71 = 454,926.87 : x
  2. Step 2: Convert to fraction form
    478,872.47/718,308.71 = 454,926.87/x
  3. Step 3: Cross multiply
    478,872.47x = 718,308.71 × 454,926.87
  4. Step 4: Simplify right side
    478,872.47x = 326,777,930,859.40
  5. Step 5: Solve for x
    x = 326,777,930,859.40/478,872.47
  6. Step 6: Final answer
    x = 682,390.31

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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.