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Finding the Fourth Proportional to 887,281.90, 1,330,594.80 and 288,262.60

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Solution

The fourth proportional to 887,281.90, 1,330,594.80 and 288,262.60 is: 432,287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,281.90 : 1,330,594.80 = 288,262.60 : x
  2. Step 2: Convert to fraction form
    887,281.90/1,330,594.80 = 288,262.60/x
  3. Step 3: Cross multiply
    887,281.90x = 1,330,594.80 × 288,262.60
  4. Step 4: Simplify right side
    887,281.90x = 383,560,716,594.48
  5. Step 5: Solve for x
    x = 383,560,716,594.48/887,281.90
  6. Step 6: Final answer
    x = 432,287.32

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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.