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Finding the Fourth Proportional to 783,298.88, 1,080,959.05 and 425,602.88

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Solution

The fourth proportional to 783,298.88, 1,080,959.05 and 425,602.88 is: 587,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,298.88 : 1,080,959.05 = 425,602.88 : x
  2. Step 2: Convert to fraction form
    783,298.88/1,080,959.05 = 425,602.88/x
  3. Step 3: Cross multiply
    783,298.88x = 1,080,959.05 × 425,602.88
  4. Step 4: Simplify right side
    783,298.88x = 460,059,278,373.26
  5. Step 5: Solve for x
    x = 460,059,278,373.26/783,298.88
  6. Step 6: Final answer
    x = 587,335.55

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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.