Home / 887,078.90-1,330,290.30-288,059.60

Finding the Fourth Proportional to 887,078.90, 1,330,290.30 and 288,059.60

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Solution

The fourth proportional to 887,078.90, 1,330,290.30 and 288,059.60 is: 431,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,078.90 : 1,330,290.30 = 288,059.60 : x
  2. Step 2: Convert to fraction form
    887,078.90/1,330,290.30 = 288,059.60/x
  3. Step 3: Cross multiply
    887,078.90x = 1,330,290.30 × 288,059.60
  4. Step 4: Simplify right side
    887,078.90x = 383,202,891,701.88
  5. Step 5: Solve for x
    x = 383,202,891,701.88/887,078.90
  6. Step 6: Final answer
    x = 431,982.87

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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.