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Finding the Fourth Proportional to 520,139.52, 717,394.32 and 359,263.80

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Solution

The fourth proportional to 520,139.52, 717,394.32 and 359,263.80 is: 495,508.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,139.52 : 717,394.32 = 359,263.80 : x
  2. Step 2: Convert to fraction form
    520,139.52/717,394.32 = 359,263.80/x
  3. Step 3: Cross multiply
    520,139.52x = 717,394.32 × 359,263.80
  4. Step 4: Simplify right side
    520,139.52x = 257,733,809,501.62
  5. Step 5: Solve for x
    x = 257,733,809,501.62/520,139.52
  6. Step 6: Final answer
    x = 495,508.99

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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.