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Finding the Fourth Proportional to 783,299, 1,080,959.22 and 425,603

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Solution

The fourth proportional to 783,299, 1,080,959.22 and 425,603 is: 587,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,299 : 1,080,959.22 = 425,603 : x
  2. Step 2: Convert to fraction form
    783,299/1,080,959.22 = 425,603/x
  3. Step 3: Cross multiply
    783,299x = 1,080,959.22 × 425,603
  4. Step 4: Simplify right side
    783,299x = 460,059,486,909.66
  5. Step 5: Solve for x
    x = 460,059,486,909.66/783,299
  6. Step 6: Final answer
    x = 587,335.73

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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.