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Finding the Fourth Proportional to 2,655,831.70, 3,984,731.70 and 858,773.80

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Solution

The fourth proportional to 2,655,831.70, 3,984,731.70 and 858,773.80 is: 1,288,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655,831.70 : 3,984,731.70 = 858,773.80 : x
  2. Step 2: Convert to fraction form
    2,655,831.70/3,984,731.70 = 858,773.80/x
  3. Step 3: Cross multiply
    2,655,831.70x = 3,984,731.70 × 858,773.80
  4. Step 4: Simplify right side
    2,655,831.70x = 3,421,983,183,989.46
  5. Step 5: Solve for x
    x = 3,421,983,183,989.46/2,655,831.70
  6. Step 6: Final answer
    x = 1,288,478.93

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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.