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Finding the Fourth Proportional to 539,990.80, 808,819.80 and 446,678.80

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Solution

The fourth proportional to 539,990.80, 808,819.80 and 446,678.80 is: 669,053.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,990.80 : 808,819.80 = 446,678.80 : x
  2. Step 2: Convert to fraction form
    539,990.80/808,819.80 = 446,678.80/x
  3. Step 3: Cross multiply
    539,990.80x = 808,819.80 × 446,678.80
  4. Step 4: Simplify right side
    539,990.80x = 361,282,657,680.24
  5. Step 5: Solve for x
    x = 361,282,657,680.24/539,990.80
  6. Step 6: Final answer
    x = 669,053.36

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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.