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Finding the Fourth Proportional to 978,363.33, 1,350,155.21 and 591,124.88

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Solution

The fourth proportional to 978,363.33, 1,350,155.21 and 591,124.88 is: 815,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,363.33 : 1,350,155.21 = 591,124.88 : x
  2. Step 2: Convert to fraction form
    978,363.33/1,350,155.21 = 591,124.88/x
  3. Step 3: Cross multiply
    978,363.33x = 1,350,155.21 × 591,124.88
  4. Step 4: Simplify right side
    978,363.33x = 798,110,326,786.22
  5. Step 5: Solve for x
    x = 798,110,326,786.22/978,363.33
  6. Step 6: Final answer
    x = 815,760.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.