Home / 987,017.40-1,479,236.18-714,381.60

Finding the Fourth Proportional to 987,017.40, 1,479,236.18 and 714,381.60

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Solution

The fourth proportional to 987,017.40, 1,479,236.18 and 714,381.60 is: 1,070,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,017.40 : 1,479,236.18 = 714,381.60 : x
  2. Step 2: Convert to fraction form
    987,017.40/1,479,236.18 = 714,381.60/x
  3. Step 3: Cross multiply
    987,017.40x = 1,479,236.18 × 714,381.60
  4. Step 4: Simplify right side
    987,017.40x = 1,056,739,106,861.16
  5. Step 5: Solve for x
    x = 1,056,739,106,861.16/987,017.40
  6. Step 6: Final answer
    x = 1,070,638.78

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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.