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Finding the Fourth Proportional to 687,520.29, 948,758.75 and 377,422.82

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Solution

The fourth proportional to 687,520.29, 948,758.75 and 377,422.82 is: 520,832.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,520.29 : 948,758.75 = 377,422.82 : x
  2. Step 2: Convert to fraction form
    687,520.29/948,758.75 = 377,422.82/x
  3. Step 3: Cross multiply
    687,520.29x = 948,758.75 × 377,422.82
  4. Step 4: Simplify right side
    687,520.29x = 358,083,203,409.46
  5. Step 5: Solve for x
    x = 358,083,203,409.46/687,520.29
  6. Step 6: Final answer
    x = 520,832.92

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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.