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Finding the Fourth Proportional to 887,998.80, 1,330,467.30 and 413,711.40

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Solution

The fourth proportional to 887,998.80, 1,330,467.30 and 413,711.40 is: 619,853.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,998.80 : 1,330,467.30 = 413,711.40 : x
  2. Step 2: Convert to fraction form
    887,998.80/1,330,467.30 = 413,711.40/x
  3. Step 3: Cross multiply
    887,998.80x = 1,330,467.30 × 413,711.40
  4. Step 4: Simplify right side
    887,998.80x = 550,429,489,337.22
  5. Step 5: Solve for x
    x = 550,429,489,337.22/887,998.80
  6. Step 6: Final answer
    x = 619,853.87

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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.