Home / 1,299,337,633.20-1,949,006,449.80-644,389,744.80

Finding the Fourth Proportional to 1,299,337,633.20, 1,949,006,449.80 and 644,389,744.80

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Solution

The fourth proportional to 1,299,337,633.20, 1,949,006,449.80 and 644,389,744.80 is: 966,584,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,337,633.20 : 1,949,006,449.80 = 644,389,744.80 : x
  2. Step 2: Convert to fraction form
    1,299,337,633.20/1,949,006,449.80 = 644,389,744.80/x
  3. Step 3: Cross multiply
    1,299,337,633.20x = 1,949,006,449.80 × 644,389,744.80
  4. Step 4: Simplify right side
    1,299,337,633.20x = 1,255,919,768,800,175,872
  5. Step 5: Solve for x
    x = 1,255,919,768,800,175,872/1,299,337,633.20
  6. Step 6: Final answer
    x = 966,584,617.20

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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.