Home / 657,069.40-985,604.10-433,120.60

Finding the Fourth Proportional to 657,069.40, 985,604.10 and 433,120.60

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Solution

The fourth proportional to 657,069.40, 985,604.10 and 433,120.60 is: 649,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,069.40 : 985,604.10 = 433,120.60 : x
  2. Step 2: Convert to fraction form
    657,069.40/985,604.10 = 433,120.60/x
  3. Step 3: Cross multiply
    657,069.40x = 985,604.10 × 433,120.60
  4. Step 4: Simplify right side
    657,069.40x = 426,885,439,154.46
  5. Step 5: Solve for x
    x = 426,885,439,154.46/657,069.40
  6. Step 6: Final answer
    x = 649,680.90

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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.