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Finding the Fourth Proportional to 888,143.80, 1,330,684.80 and 413,856.40

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Solution

The fourth proportional to 888,143.80, 1,330,684.80 and 413,856.40 is: 620,071.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,143.80 : 1,330,684.80 = 413,856.40 : x
  2. Step 2: Convert to fraction form
    888,143.80/1,330,684.80 = 413,856.40/x
  3. Step 3: Cross multiply
    888,143.80x = 1,330,684.80 × 413,856.40
  4. Step 4: Simplify right side
    888,143.80x = 550,712,420,862.72
  5. Step 5: Solve for x
    x = 550,712,420,862.72/888,143.80
  6. Step 6: Final answer
    x = 620,071.23

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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.