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Finding the Fourth Proportional to 674,715.96, 931,082.58 and 368,789.76

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Solution

The fourth proportional to 674,715.96, 931,082.58 and 368,789.76 is: 508,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,715.96 : 931,082.58 = 368,789.76 : x
  2. Step 2: Convert to fraction form
    674,715.96/931,082.58 = 368,789.76/x
  3. Step 3: Cross multiply
    674,715.96x = 931,082.58 × 368,789.76
  4. Step 4: Simplify right side
    674,715.96x = 343,373,721,218.38
  5. Step 5: Solve for x
    x = 343,373,721,218.38/674,715.96
  6. Step 6: Final answer
    x = 508,915.96

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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.