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Finding the Fourth Proportional to 988,306.40, 1,482,459.60 and 866,271.80

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Solution

The fourth proportional to 988,306.40, 1,482,459.60 and 866,271.80 is: 1,299,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,306.40 : 1,482,459.60 = 866,271.80 : x
  2. Step 2: Convert to fraction form
    988,306.40/1,482,459.60 = 866,271.80/x
  3. Step 3: Cross multiply
    988,306.40x = 1,482,459.60 × 866,271.80
  4. Step 4: Simplify right side
    988,306.40x = 1,284,212,946,119.28
  5. Step 5: Solve for x
    x = 1,284,212,946,119.28/988,306.40
  6. Step 6: Final answer
    x = 1,299,407.70

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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.