Home / 12,127,645,507.60-18,191,468,261.40-7,413,551,261.20

Finding the Fourth Proportional to 12,127,645,507.60, 18,191,468,261.40 and 7,413,551,261.20

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Solution

The fourth proportional to 12,127,645,507.60, 18,191,468,261.40 and 7,413,551,261.20 is: 11,120,326,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,645,507.60 : 18,191,468,261.40 = 7,413,551,261.20 : x
  2. Step 2: Convert to fraction form
    12,127,645,507.60/18,191,468,261.40 = 7,413,551,261.20/x
  3. Step 3: Cross multiply
    12,127,645,507.60x = 18,191,468,261.40 × 7,413,551,261.20
  4. Step 4: Simplify right side
    12,127,645,507.60x = 134,863,382,472,381,743,104
  5. Step 5: Solve for x
    x = 134,863,382,472,381,743,104/12,127,645,507.60
  6. Step 6: Final answer
    x = 11,120,326,891.80

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Double scale
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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.