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Finding the Fourth Proportional to 911,666.80, 1,367,736.66 and 484,851.68

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Solution

The fourth proportional to 911,666.80, 1,367,736.66 and 484,851.68 is: 727,403.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,666.80 : 1,367,736.66 = 484,851.68 : x
  2. Step 2: Convert to fraction form
    911,666.80/1,367,736.66 = 484,851.68/x
  3. Step 3: Cross multiply
    911,666.80x = 1,367,736.66 × 484,851.68
  4. Step 4: Simplify right side
    911,666.80x = 663,149,417,398.59
  5. Step 5: Solve for x
    x = 663,149,417,398.59/911,666.80
  6. Step 6: Final answer
    x = 727,403.28

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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.