Home / 718,205.15-991,130.03-395,926.80

Finding the Fourth Proportional to 718,205.15, 991,130.03 and 395,926.80

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Solution

The fourth proportional to 718,205.15, 991,130.03 and 395,926.80 is: 546,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,205.15 : 991,130.03 = 395,926.80 : x
  2. Step 2: Convert to fraction form
    718,205.15/991,130.03 = 395,926.80/x
  3. Step 3: Cross multiply
    718,205.15x = 991,130.03 × 395,926.80
  4. Step 4: Simplify right side
    718,205.15x = 392,414,939,182.17
  5. Step 5: Solve for x
    x = 392,414,939,182.17/718,205.15
  6. Step 6: Final answer
    x = 546,382.80

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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.