Home / 657,030.20-985,545.30-447,078.20

Finding the Fourth Proportional to 657,030.20, 985,545.30 and 447,078.20

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Solution

The fourth proportional to 657,030.20, 985,545.30 and 447,078.20 is: 670,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,030.20 : 985,545.30 = 447,078.20 : x
  2. Step 2: Convert to fraction form
    657,030.20/985,545.30 = 447,078.20/x
  3. Step 3: Cross multiply
    657,030.20x = 985,545.30 × 447,078.20
  4. Step 4: Simplify right side
    657,030.20x = 440,615,818,742.46
  5. Step 5: Solve for x
    x = 440,615,818,742.46/657,030.20
  6. Step 6: Final answer
    x = 670,617.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.