Home / 2,116,965,817.31-2,921,415,231.80-1,177,148,281.55

Finding the Fourth Proportional to 2,116,965,817.31, 2,921,415,231.80 and 1,177,148,281.55

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Solution

The fourth proportional to 2,116,965,817.31, 2,921,415,231.80 and 1,177,148,281.55 is: 1,624,465,965.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116,965,817.31 : 2,921,415,231.80 = 1,177,148,281.55 : x
  2. Step 2: Convert to fraction form
    2,116,965,817.31/2,921,415,231.80 = 1,177,148,281.55/x
  3. Step 3: Cross multiply
    2,116,965,817.31x = 2,921,415,231.80 × 1,177,148,281.55
  4. Step 4: Simplify right side
    2,116,965,817.31x = 3,438,938,919,801,479,168
  5. Step 5: Solve for x
    x = 3,438,938,919,801,479,168/2,116,965,817.31
  6. Step 6: Final answer
    x = 1,624,465,965.24

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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.