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Finding the Fourth Proportional to 539,474.90, 808,521.15 and 480,031.70

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Solution

The fourth proportional to 539,474.90, 808,521.15 and 480,031.70 is: 719,432.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,474.90 : 808,521.15 = 480,031.70 : x
  2. Step 2: Convert to fraction form
    539,474.90/808,521.15 = 480,031.70/x
  3. Step 3: Cross multiply
    539,474.90x = 808,521.15 × 480,031.70
  4. Step 4: Simplify right side
    539,474.90x = 388,115,782,120.46
  5. Step 5: Solve for x
    x = 388,115,782,120.46/539,474.90
  6. Step 6: Final answer
    x = 719,432.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.