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Finding the Fourth Proportional to 888,155.80, 1,330,702.80 and 413,868.40

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Solution

The fourth proportional to 888,155.80, 1,330,702.80 and 413,868.40 is: 620,089.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,155.80 : 1,330,702.80 = 413,868.40 : x
  2. Step 2: Convert to fraction form
    888,155.80/1,330,702.80 = 413,868.40/x
  3. Step 3: Cross multiply
    888,155.80x = 1,330,702.80 × 413,868.40
  4. Step 4: Simplify right side
    888,155.80x = 550,735,838,711.52
  5. Step 5: Solve for x
    x = 550,735,838,711.52/888,155.80
  6. Step 6: Final answer
    x = 620,089.22

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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.