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Finding the Fourth Proportional to 497,247.70, 745,871.55 and 418,515.70

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Solution

The fourth proportional to 497,247.70, 745,871.55 and 418,515.70 is: 627,773.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,247.70 : 745,871.55 = 418,515.70 : x
  2. Step 2: Convert to fraction form
    497,247.70/745,871.55 = 418,515.70/x
  3. Step 3: Cross multiply
    497,247.70x = 745,871.55 × 418,515.70
  4. Step 4: Simplify right side
    497,247.70x = 312,158,953,858.34
  5. Step 5: Solve for x
    x = 312,158,953,858.34/497,247.70
  6. Step 6: Final answer
    x = 627,773.55

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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.