Home / 12,837,378,258.40-17,715,602,837.30-7,121,662,832.61

Finding the Fourth Proportional to 12,837,378,258.40, 17,715,602,837.30 and 7,121,662,832.61

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Solution

The fourth proportional to 12,837,378,258.40, 17,715,602,837.30 and 7,121,662,832.61 is: 9,827,906,270.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,837,378,258.40 : 17,715,602,837.30 = 7,121,662,832.61 : x
  2. Step 2: Convert to fraction form
    12,837,378,258.40/17,715,602,837.30 = 7,121,662,832.61/x
  3. Step 3: Cross multiply
    12,837,378,258.40x = 17,715,602,837.30 × 7,121,662,832.61
  4. Step 4: Simplify right side
    12,837,378,258.40x = 126,164,550,283,684,888,576
  5. Step 5: Solve for x
    x = 126,164,550,283,684,888,576/12,837,378,258.40
  6. Step 6: Final answer
    x = 9,827,906,270.59

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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.