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Finding the Fourth Proportional to 978,509.72, 1,466,348 and 674,591.92

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Solution

The fourth proportional to 978,509.72, 1,466,348 and 674,591.92 is: 1,010,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,509.72 : 1,466,348 = 674,591.92 : x
  2. Step 2: Convert to fraction form
    978,509.72/1,466,348 = 674,591.92/x
  3. Step 3: Cross multiply
    978,509.72x = 1,466,348 × 674,591.92
  4. Step 4: Simplify right side
    978,509.72x = 989,186,512,708.16
  5. Step 5: Solve for x
    x = 989,186,512,708.16/978,509.72
  6. Step 6: Final answer
    x = 1,010,911.28

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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.