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Finding the Fourth Proportional to 665,810.40, 998,715.60 and 266,642.40

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Solution

The fourth proportional to 665,810.40, 998,715.60 and 266,642.40 is: 399,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,810.40 : 998,715.60 = 266,642.40 : x
  2. Step 2: Convert to fraction form
    665,810.40/998,715.60 = 266,642.40/x
  3. Step 3: Cross multiply
    665,810.40x = 998,715.60 × 266,642.40
  4. Step 4: Simplify right side
    665,810.40x = 266,299,924,501.44
  5. Step 5: Solve for x
    x = 266,299,924,501.44/665,810.40
  6. Step 6: Final answer
    x = 399,963.60

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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.