Home / 890,139.40-1,335,209.10-652,193.80

Finding the Fourth Proportional to 890,139.40, 1,335,209.10 and 652,193.80

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Solution

The fourth proportional to 890,139.40, 1,335,209.10 and 652,193.80 is: 978,290.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,139.40 : 1,335,209.10 = 652,193.80 : x
  2. Step 2: Convert to fraction form
    890,139.40/1,335,209.10 = 652,193.80/x
  3. Step 3: Cross multiply
    890,139.40x = 1,335,209.10 × 652,193.80
  4. Step 4: Simplify right side
    890,139.40x = 870,815,096,723.58
  5. Step 5: Solve for x
    x = 870,815,096,723.58/890,139.40
  6. Step 6: Final answer
    x = 978,290.70

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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.