Home / 718,223.48-991,151.40-395,926.50

Finding the Fourth Proportional to 718,223.48, 991,151.40 and 395,926.50

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Solution

The fourth proportional to 718,223.48, 991,151.40 and 395,926.50 is: 546,380.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,223.48 : 991,151.40 = 395,926.50 : x
  2. Step 2: Convert to fraction form
    718,223.48/991,151.40 = 395,926.50/x
  3. Step 3: Cross multiply
    718,223.48x = 991,151.40 × 395,926.50
  4. Step 4: Simplify right side
    718,223.48x = 392,423,104,772.10
  5. Step 5: Solve for x
    x = 392,423,104,772.10/718,223.48
  6. Step 6: Final answer
    x = 546,380.22

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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.