Home / 979,885,872.70-1,469,828,809.05-490,109,847.10

Finding the Fourth Proportional to 979,885,872.70, 1,469,828,809.05 and 490,109,847.10

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Solution

The fourth proportional to 979,885,872.70, 1,469,828,809.05 and 490,109,847.10 is: 735,164,770.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,885,872.70 : 1,469,828,809.05 = 490,109,847.10 : x
  2. Step 2: Convert to fraction form
    979,885,872.70/1,469,828,809.05 = 490,109,847.10/x
  3. Step 3: Cross multiply
    979,885,872.70x = 1,469,828,809.05 × 490,109,847.10
  4. Step 4: Simplify right side
    979,885,872.70x = 720,377,572,866,670,592
  5. Step 5: Solve for x
    x = 720,377,572,866,670,592/979,885,872.70
  6. Step 6: Final answer
    x = 735,164,770.65

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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.