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Finding the Fourth Proportional to 691,012.38, 953,598 and 385,082.07

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Solution

The fourth proportional to 691,012.38, 953,598 and 385,082.07 is: 531,413.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,012.38 : 953,598 = 385,082.07 : x
  2. Step 2: Convert to fraction form
    691,012.38/953,598 = 385,082.07/x
  3. Step 3: Cross multiply
    691,012.38x = 953,598 × 385,082.07
  4. Step 4: Simplify right side
    691,012.38x = 367,213,491,787.86
  5. Step 5: Solve for x
    x = 367,213,491,787.86/691,012.38
  6. Step 6: Final answer
    x = 531,413.77

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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.