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Finding the Fourth Proportional to 617,622.72, 924,631.20 and 380,253.12

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Solution

The fourth proportional to 617,622.72, 924,631.20 and 380,253.12 is: 569,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,622.72 : 924,631.20 = 380,253.12 : x
  2. Step 2: Convert to fraction form
    617,622.72/924,631.20 = 380,253.12/x
  3. Step 3: Cross multiply
    617,622.72x = 924,631.20 × 380,253.12
  4. Step 4: Simplify right side
    617,622.72x = 351,593,898,649.34
  5. Step 5: Solve for x
    x = 351,593,898,649.34/617,622.72
  6. Step 6: Final answer
    x = 569,269.70

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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.