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Finding the Fourth Proportional to 520,458.38, 717,945.63 and 359,397.98

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Solution

The fourth proportional to 520,458.38, 717,945.63 and 359,397.98 is: 495,771.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,458.38 : 717,945.63 = 359,397.98 : x
  2. Step 2: Convert to fraction form
    520,458.38/717,945.63 = 359,397.98/x
  3. Step 3: Cross multiply
    520,458.38x = 717,945.63 × 359,397.98
  4. Step 4: Simplify right side
    520,458.38x = 258,028,209,171.83
  5. Step 5: Solve for x
    x = 258,028,209,171.83/520,458.38
  6. Step 6: Final answer
    x = 495,771.07

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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.