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Finding the Fourth Proportional to 539,462.40, 808,286.40 and 426,710.40

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Solution

The fourth proportional to 539,462.40, 808,286.40 and 426,710.40 is: 639,348.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,462.40 : 808,286.40 = 426,710.40 : x
  2. Step 2: Convert to fraction form
    539,462.40/808,286.40 = 426,710.40/x
  3. Step 3: Cross multiply
    539,462.40x = 808,286.40 × 426,710.40
  4. Step 4: Simplify right side
    539,462.40x = 344,904,213,058.56
  5. Step 5: Solve for x
    x = 344,904,213,058.56/539,462.40
  6. Step 6: Final answer
    x = 639,348.01

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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.