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Finding the Fourth Proportional to 663,248.18, 915,022.68 and 408,156.50

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Solution

The fourth proportional to 663,248.18, 915,022.68 and 408,156.50 is: 563,096.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,248.18 : 915,022.68 = 408,156.50 : x
  2. Step 2: Convert to fraction form
    663,248.18/915,022.68 = 408,156.50/x
  3. Step 3: Cross multiply
    663,248.18x = 915,022.68 × 408,156.50
  4. Step 4: Simplify right side
    663,248.18x = 373,472,455,246.39
  5. Step 5: Solve for x
    x = 373,472,455,246.39/663,248.18
  6. Step 6: Final answer
    x = 563,096.09

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1.5x scale

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.