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Finding the Fourth Proportional to 663,624, 915,824.16 and 377,156.16

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Solution

The fourth proportional to 663,624, 915,824.16 and 377,156.16 is: 520,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,624 : 915,824.16 = 377,156.16 : x
  2. Step 2: Convert to fraction form
    663,624/915,824.16 = 377,156.16/x
  3. Step 3: Cross multiply
    663,624x = 915,824.16 × 377,156.16
  4. Step 4: Simplify right side
    663,624x = 345,408,723,420.83
  5. Step 5: Solve for x
    x = 345,408,723,420.83/663,624
  6. Step 6: Final answer
    x = 520,488.60

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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.