Home / 1,299,337,654.70-1,949,006,482.05-644,389,766.30

Finding the Fourth Proportional to 1,299,337,654.70, 1,949,006,482.05 and 644,389,766.30

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Solution

The fourth proportional to 1,299,337,654.70, 1,949,006,482.05 and 644,389,766.30 is: 966,584,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,337,654.70 : 1,949,006,482.05 = 644,389,766.30 : x
  2. Step 2: Convert to fraction form
    1,299,337,654.70/1,949,006,482.05 = 644,389,766.30/x
  3. Step 3: Cross multiply
    1,299,337,654.70x = 1,949,006,482.05 × 644,389,766.30
  4. Step 4: Simplify right side
    1,299,337,654.70x = 1,255,919,831,485,384,448
  5. Step 5: Solve for x
    x = 1,255,919,831,485,384,448/1,299,337,654.70
  6. Step 6: Final answer
    x = 966,584,649.45

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Double scale
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Similar ratio
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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.