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Finding the Fourth Proportional to 978,045.30, 1,465,099.65 and 659,180.70

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Solution

The fourth proportional to 978,045.30, 1,465,099.65 and 659,180.70 is: 987,444.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,045.30 : 1,465,099.65 = 659,180.70 : x
  2. Step 2: Convert to fraction form
    978,045.30/1,465,099.65 = 659,180.70/x
  3. Step 3: Cross multiply
    978,045.30x = 1,465,099.65 × 659,180.70
  4. Step 4: Simplify right side
    978,045.30x = 965,765,412,856.76
  5. Step 5: Solve for x
    x = 965,765,412,856.76/978,045.30
  6. Step 6: Final answer
    x = 987,444.46

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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.