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Finding the Fourth Proportional to 988,305.40, 1,482,458.10 and 866,270.80

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Solution

The fourth proportional to 988,305.40, 1,482,458.10 and 866,270.80 is: 1,299,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,305.40 : 1,482,458.10 = 866,270.80 : x
  2. Step 2: Convert to fraction form
    988,305.40/1,482,458.10 = 866,270.80/x
  3. Step 3: Cross multiply
    988,305.40x = 1,482,458.10 × 866,270.80
  4. Step 4: Simplify right side
    988,305.40x = 1,284,210,164,253.48
  5. Step 5: Solve for x
    x = 1,284,210,164,253.48/988,305.40
  6. Step 6: Final answer
    x = 1,299,406.20

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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.