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Finding the Fourth Proportional to 1,120,782, 1,546,679.16 and 718,374

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Solution

The fourth proportional to 1,120,782, 1,546,679.16 and 718,374 is: 991,356.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,782 : 1,546,679.16 = 718,374 : x
  2. Step 2: Convert to fraction form
    1,120,782/1,546,679.16 = 718,374/x
  3. Step 3: Cross multiply
    1,120,782x = 1,546,679.16 × 718,374
  4. Step 4: Simplify right side
    1,120,782x = 1,111,094,094,885.84
  5. Step 5: Solve for x
    x = 1,111,094,094,885.84/1,120,782
  6. Step 6: Final answer
    x = 991,356.12

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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.