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Finding the Fourth Proportional to 520,462.40, 717,951.16 and 359,402

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Solution

The fourth proportional to 520,462.40, 717,951.16 and 359,402 is: 495,776.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,462.40 : 717,951.16 = 359,402 : x
  2. Step 2: Convert to fraction form
    520,462.40/717,951.16 = 359,402/x
  3. Step 3: Cross multiply
    520,462.40x = 717,951.16 × 359,402
  4. Step 4: Simplify right side
    520,462.40x = 258,033,082,806.32
  5. Step 5: Solve for x
    x = 258,033,082,806.32/520,462.40
  6. Step 6: Final answer
    x = 495,776.61

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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.