Home / 725,593,961.80-1,088,390,942.70-397,942,870.60

Finding the Fourth Proportional to 725,593,961.80, 1,088,390,942.70 and 397,942,870.60

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Solution

The fourth proportional to 725,593,961.80, 1,088,390,942.70 and 397,942,870.60 is: 596,914,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,593,961.80 : 1,088,390,942.70 = 397,942,870.60 : x
  2. Step 2: Convert to fraction form
    725,593,961.80/1,088,390,942.70 = 397,942,870.60/x
  3. Step 3: Cross multiply
    725,593,961.80x = 1,088,390,942.70 × 397,942,870.60
  4. Step 4: Simplify right side
    725,593,961.80x = 433,117,416,073,078,144
  5. Step 5: Solve for x
    x = 433,117,416,073,078,144/725,593,961.80
  6. Step 6: Final answer
    x = 596,914,305.90

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Double scale
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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.