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Finding the Fourth Proportional to 616,082.60, 924,872.70 and 391,442.60

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Solution

The fourth proportional to 616,082.60, 924,872.70 and 391,442.60 is: 587,639.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,082.60 : 924,872.70 = 391,442.60 : x
  2. Step 2: Convert to fraction form
    616,082.60/924,872.70 = 391,442.60/x
  3. Step 3: Cross multiply
    616,082.60x = 924,872.70 × 391,442.60
  4. Step 4: Simplify right side
    616,082.60x = 362,034,574,357.02
  5. Step 5: Solve for x
    x = 362,034,574,357.02/616,082.60
  6. Step 6: Final answer
    x = 587,639.67

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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.