Home / 718,264.25-991,212.32-395,985.87

Finding the Fourth Proportional to 718,264.25, 991,212.32 and 395,985.87

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Solution

The fourth proportional to 718,264.25, 991,212.32 and 395,985.87 is: 546,464.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,264.25 : 991,212.32 = 395,985.87 : x
  2. Step 2: Convert to fraction form
    718,264.25/991,212.32 = 395,985.87/x
  3. Step 3: Cross multiply
    718,264.25x = 991,212.32 × 395,985.87
  4. Step 4: Simplify right side
    718,264.25x = 392,506,070,909.99
  5. Step 5: Solve for x
    x = 392,506,070,909.99/718,264.25
  6. Step 6: Final answer
    x = 546,464.72

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1.5x scale

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.