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Finding the Fourth Proportional to 989,560.80, 1,484,254.80 and 324,712.80

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Solution

The fourth proportional to 989,560.80, 1,484,254.80 and 324,712.80 is: 487,040.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,560.80 : 1,484,254.80 = 324,712.80 : x
  2. Step 2: Convert to fraction form
    989,560.80/1,484,254.80 = 324,712.80/x
  3. Step 3: Cross multiply
    989,560.80x = 1,484,254.80 × 324,712.80
  4. Step 4: Simplify right side
    989,560.80x = 481,956,532,021.44
  5. Step 5: Solve for x
    x = 481,956,532,021.44/989,560.80
  6. Step 6: Final answer
    x = 487,040.85

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1.5x scale

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.