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Finding the Fourth Proportional to 819,955.20, 1,230,451.20 and 482,995.20

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Solution

The fourth proportional to 819,955.20, 1,230,451.20 and 482,995.20 is: 724,798.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,955.20 : 1,230,451.20 = 482,995.20 : x
  2. Step 2: Convert to fraction form
    819,955.20/1,230,451.20 = 482,995.20/x
  3. Step 3: Cross multiply
    819,955.20x = 1,230,451.20 × 482,995.20
  4. Step 4: Simplify right side
    819,955.20x = 594,302,023,434.24
  5. Step 5: Solve for x
    x = 594,302,023,434.24/819,955.20
  6. Step 6: Final answer
    x = 724,798.16

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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.