Home / 738,148.68-1,018,645.16-398,616.92

Finding the Fourth Proportional to 738,148.68, 1,018,645.16 and 398,616.92

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Solution

The fourth proportional to 738,148.68, 1,018,645.16 and 398,616.92 is: 550,091.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,148.68 : 1,018,645.16 = 398,616.92 : x
  2. Step 2: Convert to fraction form
    738,148.68/1,018,645.16 = 398,616.92/x
  3. Step 3: Cross multiply
    738,148.68x = 1,018,645.16 × 398,616.92
  4. Step 4: Simplify right side
    738,148.68x = 406,049,196,252.11
  5. Step 5: Solve for x
    x = 406,049,196,252.11/738,148.68
  6. Step 6: Final answer
    x = 550,091.34

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Double scale
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Similar ratio
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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.