Home / 665,811.40-998,717.10-266,643.40

Finding the Fourth Proportional to 665,811.40, 998,717.10 and 266,643.40

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Solution

The fourth proportional to 665,811.40, 998,717.10 and 266,643.40 is: 399,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,811.40 : 998,717.10 = 266,643.40 : x
  2. Step 2: Convert to fraction form
    665,811.40/998,717.10 = 266,643.40/x
  3. Step 3: Cross multiply
    665,811.40x = 998,717.10 × 266,643.40
  4. Step 4: Simplify right side
    665,811.40x = 266,301,323,182.14
  5. Step 5: Solve for x
    x = 266,301,323,182.14/665,811.40
  6. Step 6: Final answer
    x = 399,965.10

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Similar ratio
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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.