Home / 665,723.40-998,585.10-559,435.20

Finding the Fourth Proportional to 665,723.40, 998,585.10 and 559,435.20

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Solution

The fourth proportional to 665,723.40, 998,585.10 and 559,435.20 is: 839,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,723.40 : 998,585.10 = 559,435.20 : x
  2. Step 2: Convert to fraction form
    665,723.40/998,585.10 = 559,435.20/x
  3. Step 3: Cross multiply
    665,723.40x = 998,585.10 × 559,435.20
  4. Step 4: Simplify right side
    665,723.40x = 558,643,655,135.52
  5. Step 5: Solve for x
    x = 558,643,655,135.52/665,723.40
  6. Step 6: Final answer
    x = 839,152.80

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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.