Home / 1,299,078,006.20-1,948,617,009.30-329,729,622.20

Finding the Fourth Proportional to 1,299,078,006.20, 1,948,617,009.30 and 329,729,622.20

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Solution

The fourth proportional to 1,299,078,006.20, 1,948,617,009.30 and 329,729,622.20 is: 494,594,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,078,006.20 : 1,948,617,009.30 = 329,729,622.20 : x
  2. Step 2: Convert to fraction form
    1,299,078,006.20/1,948,617,009.30 = 329,729,622.20/x
  3. Step 3: Cross multiply
    1,299,078,006.20x = 1,948,617,009.30 × 329,729,622.20
  4. Step 4: Simplify right side
    1,299,078,006.20x = 642,516,750,288,982,784
  5. Step 5: Solve for x
    x = 642,516,750,288,982,784/1,299,078,006.20
  6. Step 6: Final answer
    x = 494,594,433.30

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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.