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Finding the Fourth Proportional to 887,892.80, 1,330,308.30 and 413,605.40

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Solution

The fourth proportional to 887,892.80, 1,330,308.30 and 413,605.40 is: 619,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,892.80 : 1,330,308.30 = 413,605.40 : x
  2. Step 2: Convert to fraction form
    887,892.80/1,330,308.30 = 413,605.40/x
  3. Step 3: Cross multiply
    887,892.80x = 1,330,308.30 × 413,605.40
  4. Step 4: Simplify right side
    887,892.80x = 550,222,696,544.82
  5. Step 5: Solve for x
    x = 550,222,696,544.82/887,892.80
  6. Step 6: Final answer
    x = 619,694.96

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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.