Home / 765,680.80-1,148,002.80-405,911.20

Finding the Fourth Proportional to 765,680.80, 1,148,002.80 and 405,911.20

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Solution

The fourth proportional to 765,680.80, 1,148,002.80 and 405,911.20 is: 608,591.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,680.80 : 1,148,002.80 = 405,911.20 : x
  2. Step 2: Convert to fraction form
    765,680.80/1,148,002.80 = 405,911.20/x
  3. Step 3: Cross multiply
    765,680.80x = 1,148,002.80 × 405,911.20
  4. Step 4: Simplify right side
    765,680.80x = 465,987,194,151.36
  5. Step 5: Solve for x
    x = 465,987,194,151.36/765,680.80
  6. Step 6: Final answer
    x = 608,591.98

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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.