Home / 887,139.10-1,330,708.65-413,872.30

Finding the Fourth Proportional to 887,139.10, 1,330,708.65 and 413,872.30

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Solution

The fourth proportional to 887,139.10, 1,330,708.65 and 413,872.30 is: 620,808.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,139.10 : 1,330,708.65 = 413,872.30 : x
  2. Step 2: Convert to fraction form
    887,139.10/1,330,708.65 = 413,872.30/x
  3. Step 3: Cross multiply
    887,139.10x = 1,330,708.65 × 413,872.30
  4. Step 4: Simplify right side
    887,139.10x = 550,743,449,605.40
  5. Step 5: Solve for x
    x = 550,743,449,605.40/887,139.10
  6. Step 6: Final answer
    x = 620,808.45

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Double scale
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Similar ratio
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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.