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Finding the Fourth Proportional to 539,897.80, 808,680.30 and 469,913.80

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Solution

The fourth proportional to 539,897.80, 808,680.30 and 469,913.80 is: 703,855.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,897.80 : 808,680.30 = 469,913.80 : x
  2. Step 2: Convert to fraction form
    539,897.80/808,680.30 = 469,913.80/x
  3. Step 3: Cross multiply
    539,897.80x = 808,680.30 × 469,913.80
  4. Step 4: Simplify right side
    539,897.80x = 380,010,032,758.14
  5. Step 5: Solve for x
    x = 380,010,032,758.14/539,897.80
  6. Step 6: Final answer
    x = 703,855.49

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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.