Home / 718,845.30-992,003.65-396,575.46

Finding the Fourth Proportional to 718,845.30, 992,003.65 and 396,575.46

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Solution

The fourth proportional to 718,845.30, 992,003.65 and 396,575.46 is: 547,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,845.30 : 992,003.65 = 396,575.46 : x
  2. Step 2: Convert to fraction form
    718,845.30/992,003.65 = 396,575.46/x
  3. Step 3: Cross multiply
    718,845.30x = 992,003.65 × 396,575.46
  4. Step 4: Simplify right side
    718,845.30x = 393,404,303,820.43
  5. Step 5: Solve for x
    x = 393,404,303,820.43/718,845.30
  6. Step 6: Final answer
    x = 547,272.55

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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.