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Finding the Fourth Proportional to 888,146.80, 1,330,689.30 and 413,859.40

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Solution

The fourth proportional to 888,146.80, 1,330,689.30 and 413,859.40 is: 620,075.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,146.80 : 1,330,689.30 = 413,859.40 : x
  2. Step 2: Convert to fraction form
    888,146.80/1,330,689.30 = 413,859.40/x
  3. Step 3: Cross multiply
    888,146.80x = 1,330,689.30 × 413,859.40
  4. Step 4: Simplify right side
    888,146.80x = 550,718,275,284.42
  5. Step 5: Solve for x
    x = 550,718,275,284.42/888,146.80
  6. Step 6: Final answer
    x = 620,075.73

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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.