Home / 738,182.56-1,018,691.94-398,650.78

Finding the Fourth Proportional to 738,182.56, 1,018,691.94 and 398,650.78

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Solution

The fourth proportional to 738,182.56, 1,018,691.94 and 398,650.78 is: 550,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,182.56 : 1,018,691.94 = 398,650.78 : x
  2. Step 2: Convert to fraction form
    738,182.56/1,018,691.94 = 398,650.78/x
  3. Step 3: Cross multiply
    738,182.56x = 1,018,691.94 × 398,650.78
  4. Step 4: Simplify right side
    738,182.56x = 406,102,336,460.71
  5. Step 5: Solve for x
    x = 406,102,336,460.71/738,182.56
  6. Step 6: Final answer
    x = 550,138.08

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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.