Home / 718,264.77-991,212.17-395,986.43

Finding the Fourth Proportional to 718,264.77, 991,212.17 and 395,986.43

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Solution

The fourth proportional to 718,264.77, 991,212.17 and 395,986.43 is: 546,465.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,264.77 : 991,212.17 = 395,986.43 : x
  2. Step 2: Convert to fraction form
    718,264.77/991,212.17 = 395,986.43/x
  3. Step 3: Cross multiply
    718,264.77x = 991,212.17 × 395,986.43
  4. Step 4: Simplify right side
    718,264.77x = 392,506,561,634.86
  5. Step 5: Solve for x
    x = 392,506,561,634.86/718,264.77
  6. Step 6: Final answer
    x = 546,465.01

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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.