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Finding the Fourth Proportional to 988,284.30, 1,363,978.61 and 625,741.80

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Solution

The fourth proportional to 988,284.30, 1,363,978.61 and 625,741.80 is: 863,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,284.30 : 1,363,978.61 = 625,741.80 : x
  2. Step 2: Convert to fraction form
    988,284.30/1,363,978.61 = 625,741.80/x
  3. Step 3: Cross multiply
    988,284.30x = 1,363,978.61 × 625,741.80
  4. Step 4: Simplify right side
    988,284.30x = 853,498,430,582.90
  5. Step 5: Solve for x
    x = 853,498,430,582.90/988,284.30
  6. Step 6: Final answer
    x = 863,616.30

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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.