Home / 718,129.28-991,075.52-395,896.96

Finding the Fourth Proportional to 718,129.28, 991,075.52 and 395,896.96

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Solution

The fourth proportional to 718,129.28, 991,075.52 and 395,896.96 is: 546,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,129.28 : 991,075.52 = 395,896.96 : x
  2. Step 2: Convert to fraction form
    718,129.28/991,075.52 = 395,896.96/x
  3. Step 3: Cross multiply
    718,129.28x = 991,075.52 × 395,896.96
  4. Step 4: Simplify right side
    718,129.28x = 392,363,785,498.42
  5. Step 5: Solve for x
    x = 392,363,785,498.42/718,129.28
  6. Step 6: Final answer
    x = 546,369.29

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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.