Home / 665,621.40-998,432.10-292,373.40

Finding the Fourth Proportional to 665,621.40, 998,432.10 and 292,373.40

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Solution

The fourth proportional to 665,621.40, 998,432.10 and 292,373.40 is: 438,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,621.40 : 998,432.10 = 292,373.40 : x
  2. Step 2: Convert to fraction form
    665,621.40/998,432.10 = 292,373.40/x
  3. Step 3: Cross multiply
    665,621.40x = 998,432.10 × 292,373.40
  4. Step 4: Simplify right side
    665,621.40x = 291,914,987,746.14
  5. Step 5: Solve for x
    x = 291,914,987,746.14/665,621.40
  6. Step 6: Final answer
    x = 438,560.10

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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.