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Finding the Fourth Proportional to 577,820.40, 866,730.60 and 388,863.60

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Solution

The fourth proportional to 577,820.40, 866,730.60 and 388,863.60 is: 583,295.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,820.40 : 866,730.60 = 388,863.60 : x
  2. Step 2: Convert to fraction form
    577,820.40/866,730.60 = 388,863.60/x
  3. Step 3: Cross multiply
    577,820.40x = 866,730.60 × 388,863.60
  4. Step 4: Simplify right side
    577,820.40x = 337,039,981,346.16
  5. Step 5: Solve for x
    x = 337,039,981,346.16/577,820.40
  6. Step 6: Final answer
    x = 583,295.40

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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.