Home / 1,780,737,918.30-2,457,409,275-987,775,687.98

Finding the Fourth Proportional to 1,780,737,918.30, 2,457,409,275 and 987,775,687.98

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Solution

The fourth proportional to 1,780,737,918.30, 2,457,409,275 and 987,775,687.98 is: 1,363,125,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780,737,918.30 : 2,457,409,275 = 987,775,687.98 : x
  2. Step 2: Convert to fraction form
    1,780,737,918.30/2,457,409,275 = 987,775,687.98/x
  3. Step 3: Cross multiply
    1,780,737,918.30x = 2,457,409,275 × 987,775,687.98
  4. Step 4: Simplify right side
    1,780,737,918.30x = 2,427,369,137,261,558,272
  5. Step 5: Solve for x
    x = 2,427,369,137,261,558,272/1,780,737,918.30
  6. Step 6: Final answer
    x = 1,363,125,428.13

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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.