Home / 12,127,680,912.60-18,191,521,368.90-5,913,647,587.80

Finding the Fourth Proportional to 12,127,680,912.60, 18,191,521,368.90 and 5,913,647,587.80

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Solution

The fourth proportional to 12,127,680,912.60, 18,191,521,368.90 and 5,913,647,587.80 is: 8,870,471,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,680,912.60 : 18,191,521,368.90 = 5,913,647,587.80 : x
  2. Step 2: Convert to fraction form
    12,127,680,912.60/18,191,521,368.90 = 5,913,647,587.80/x
  3. Step 3: Cross multiply
    12,127,680,912.60x = 18,191,521,368.90 × 5,913,647,587.80
  4. Step 4: Simplify right side
    12,127,680,912.60x = 107,578,246,461,607,657,472
  5. Step 5: Solve for x
    x = 107,578,246,461,607,657,472/12,127,680,912.60
  6. Step 6: Final answer
    x = 8,870,471,381.70

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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.