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Finding the Fourth Proportional to 663,274.48, 915,206.72 and 372,847.40

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Solution

The fourth proportional to 663,274.48, 915,206.72 and 372,847.40 is: 514,466.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,274.48 : 915,206.72 = 372,847.40 : x
  2. Step 2: Convert to fraction form
    663,274.48/915,206.72 = 372,847.40/x
  3. Step 3: Cross multiply
    663,274.48x = 915,206.72 × 372,847.40
  4. Step 4: Simplify right side
    663,274.48x = 341,232,446,014.53
  5. Step 5: Solve for x
    x = 341,232,446,014.53/663,274.48
  6. Step 6: Final answer
    x = 514,466.42

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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.