Home / 1,299,337,653.70-1,949,006,480.55-644,389,765.30

Finding the Fourth Proportional to 1,299,337,653.70, 1,949,006,480.55 and 644,389,765.30

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Solution

The fourth proportional to 1,299,337,653.70, 1,949,006,480.55 and 644,389,765.30 is: 966,584,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,337,653.70 : 1,949,006,480.55 = 644,389,765.30 : x
  2. Step 2: Convert to fraction form
    1,299,337,653.70/1,949,006,480.55 = 644,389,765.30/x
  3. Step 3: Cross multiply
    1,299,337,653.70x = 1,949,006,480.55 × 644,389,765.30
  4. Step 4: Simplify right side
    1,299,337,653.70x = 1,255,919,828,569,793,280
  5. Step 5: Solve for x
    x = 1,255,919,828,569,793,280/1,299,337,653.70
  6. Step 6: Final answer
    x = 966,584,647.95

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Double scale
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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.