Home / 12,585,488,717.40-18,878,233,076.10-7,932,616,474.20

Finding the Fourth Proportional to 12,585,488,717.40, 18,878,233,076.10 and 7,932,616,474.20

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Solution

The fourth proportional to 12,585,488,717.40, 18,878,233,076.10 and 7,932,616,474.20 is: 11,898,924,711.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585,488,717.40 : 18,878,233,076.10 = 7,932,616,474.20 : x
  2. Step 2: Convert to fraction form
    12,585,488,717.40/18,878,233,076.10 = 7,932,616,474.20/x
  3. Step 3: Cross multiply
    12,585,488,717.40x = 18,878,233,076.10 × 7,932,616,474.20
  4. Step 4: Simplify right side
    12,585,488,717.40x = 149,753,782,703,258,173,440
  5. Step 5: Solve for x
    x = 149,753,782,703,258,173,440/12,585,488,717.40
  6. Step 6: Final answer
    x = 11,898,924,711.30

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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.