Home / 657,142.20-986,102.10-433,150.20

Finding the Fourth Proportional to 657,142.20, 986,102.10 and 433,150.20

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Solution

The fourth proportional to 657,142.20, 986,102.10 and 433,150.20 is: 649,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,142.20 : 986,102.10 = 433,150.20 : x
  2. Step 2: Convert to fraction form
    657,142.20/986,102.10 = 433,150.20/x
  3. Step 3: Cross multiply
    657,142.20x = 986,102.10 × 433,150.20
  4. Step 4: Simplify right side
    657,142.20x = 427,130,321,835.42
  5. Step 5: Solve for x
    x = 427,130,321,835.42/657,142.20
  6. Step 6: Final answer
    x = 649,981.57

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Half scale
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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.