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Finding the Fourth Proportional to 750,488.80, 1,125,344.40 and 276,930.40

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Solution

The fourth proportional to 750,488.80, 1,125,344.40 and 276,930.40 is: 415,252.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,488.80 : 1,125,344.40 = 276,930.40 : x
  2. Step 2: Convert to fraction form
    750,488.80/1,125,344.40 = 276,930.40/x
  3. Step 3: Cross multiply
    750,488.80x = 1,125,344.40 × 276,930.40
  4. Step 4: Simplify right side
    750,488.80x = 311,642,074,829.76
  5. Step 5: Solve for x
    x = 311,642,074,829.76/750,488.80
  6. Step 6: Final answer
    x = 415,252.13

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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.