Home / 720,071,543.70-1,080,107,315.55-691,853,994.90

Finding the Fourth Proportional to 720,071,543.70, 1,080,107,315.55 and 691,853,994.90

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Solution

The fourth proportional to 720,071,543.70, 1,080,107,315.55 and 691,853,994.90 is: 1,037,780,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,071,543.70 : 1,080,107,315.55 = 691,853,994.90 : x
  2. Step 2: Convert to fraction form
    720,071,543.70/1,080,107,315.55 = 691,853,994.90/x
  3. Step 3: Cross multiply
    720,071,543.70x = 1,080,107,315.55 × 691,853,994.90
  4. Step 4: Simplify right side
    720,071,543.70x = 747,276,561,183,982,336
  5. Step 5: Solve for x
    x = 747,276,561,183,982,336/720,071,543.70
  6. Step 6: Final answer
    x = 1,037,780,992.35

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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.