Home / 1,299,079,389.20-1,948,619,083.80-329,731,005.20

Finding the Fourth Proportional to 1,299,079,389.20, 1,948,619,083.80 and 329,731,005.20

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Solution

The fourth proportional to 1,299,079,389.20, 1,948,619,083.80 and 329,731,005.20 is: 494,596,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,079,389.20 : 1,948,619,083.80 = 329,731,005.20 : x
  2. Step 2: Convert to fraction form
    1,299,079,389.20/1,948,619,083.80 = 329,731,005.20/x
  3. Step 3: Cross multiply
    1,299,079,389.20x = 1,948,619,083.80 × 329,731,005.20
  4. Step 4: Simplify right side
    1,299,079,389.20x = 642,520,129,253,277,056
  5. Step 5: Solve for x
    x = 642,520,129,253,277,056/1,299,079,389.20
  6. Step 6: Final answer
    x = 494,596,507.80

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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.