Home / 12,265,668,015.60-18,398,502,023.40-7,857,683,785.20

Finding the Fourth Proportional to 12,265,668,015.60, 18,398,502,023.40 and 7,857,683,785.20

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Solution

The fourth proportional to 12,265,668,015.60, 18,398,502,023.40 and 7,857,683,785.20 is: 11,786,525,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,265,668,015.60 : 18,398,502,023.40 = 7,857,683,785.20 : x
  2. Step 2: Convert to fraction form
    12,265,668,015.60/18,398,502,023.40 = 7,857,683,785.20/x
  3. Step 3: Cross multiply
    12,265,668,015.60x = 18,398,502,023.40 × 7,857,683,785.20
  4. Step 4: Simplify right side
    12,265,668,015.60x = 144,569,611,021,239,582,720
  5. Step 5: Solve for x
    x = 144,569,611,021,239,582,720/12,265,668,015.60
  6. Step 6: Final answer
    x = 11,786,525,677.80

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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.