Home / 13,428,215,346.78-18,530,612,551.26-7,406,591,430.78

Finding the Fourth Proportional to 13,428,215,346.78, 18,530,612,551.26 and 7,406,591,430.78

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Solution

The fourth proportional to 13,428,215,346.78, 18,530,612,551.26 and 7,406,591,430.78 is: 10,220,917,120.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,215,346.78 : 18,530,612,551.26 = 7,406,591,430.78 : x
  2. Step 2: Convert to fraction form
    13,428,215,346.78/18,530,612,551.26 = 7,406,591,430.78/x
  3. Step 3: Cross multiply
    13,428,215,346.78x = 18,530,612,551.26 × 7,406,591,430.78
  4. Step 4: Simplify right side
    13,428,215,346.78x = 137,248,676,129,266,614,272
  5. Step 5: Solve for x
    x = 137,248,676,129,266,614,272/13,428,215,346.78
  6. Step 6: Final answer
    x = 10,220,917,120.02

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.