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Finding the Fourth Proportional to 819,908.40, 1,131,470.64 and 457,332

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Solution

The fourth proportional to 819,908.40, 1,131,470.64 and 457,332 is: 631,116.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,908.40 : 1,131,470.64 = 457,332 : x
  2. Step 2: Convert to fraction form
    819,908.40/1,131,470.64 = 457,332/x
  3. Step 3: Cross multiply
    819,908.40x = 1,131,470.64 × 457,332
  4. Step 4: Simplify right side
    819,908.40x = 517,457,730,732.48
  5. Step 5: Solve for x
    x = 517,457,730,732.48/819,908.40
  6. Step 6: Final answer
    x = 631,116.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.