Home / 657,122.20-986,072.10-433,130.20

Finding the Fourth Proportional to 657,122.20, 986,072.10 and 433,130.20

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Solution

The fourth proportional to 657,122.20, 986,072.10 and 433,130.20 is: 649,951.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,122.20 : 986,072.10 = 433,130.20 : x
  2. Step 2: Convert to fraction form
    657,122.20/986,072.10 = 433,130.20/x
  3. Step 3: Cross multiply
    657,122.20x = 986,072.10 × 433,130.20
  4. Step 4: Simplify right side
    657,122.20x = 427,097,605,887.42
  5. Step 5: Solve for x
    x = 427,097,605,887.42/657,122.20
  6. Step 6: Final answer
    x = 649,951.57

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Double scale
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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.