Home / 657,106.20-985,659.30-342,178.20

Finding the Fourth Proportional to 657,106.20, 985,659.30 and 342,178.20

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Solution

The fourth proportional to 657,106.20, 985,659.30 and 342,178.20 is: 513,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,106.20 : 985,659.30 = 342,178.20 : x
  2. Step 2: Convert to fraction form
    657,106.20/985,659.30 = 342,178.20/x
  3. Step 3: Cross multiply
    657,106.20x = 985,659.30 × 342,178.20
  4. Step 4: Simplify right side
    657,106.20x = 337,271,125,087.26
  5. Step 5: Solve for x
    x = 337,271,125,087.26/657,106.20
  6. Step 6: Final answer
    x = 513,267.30

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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.