Home / 718,189.68-991,089.36-395,929.74

Finding the Fourth Proportional to 718,189.68, 991,089.36 and 395,929.74

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Solution

The fourth proportional to 718,189.68, 991,089.36 and 395,929.74 is: 546,376.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,189.68 : 991,089.36 = 395,929.74 : x
  2. Step 2: Convert to fraction form
    718,189.68/991,089.36 = 395,929.74/x
  3. Step 3: Cross multiply
    718,189.68x = 991,089.36 × 395,929.74
  4. Step 4: Simplify right side
    718,189.68x = 392,401,752,621.57
  5. Step 5: Solve for x
    x = 392,401,752,621.57/718,189.68
  6. Step 6: Final answer
    x = 546,376.21

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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.