Home / 1,247,778,896.94-1,721,988,673.02-690,861,927.60

Finding the Fourth Proportional to 1,247,778,896.94, 1,721,988,673.02 and 690,861,927.60

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Solution

The fourth proportional to 1,247,778,896.94, 1,721,988,673.02 and 690,861,927.60 is: 953,419,245.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,778,896.94 : 1,721,988,673.02 = 690,861,927.60 : x
  2. Step 2: Convert to fraction form
    1,247,778,896.94/1,721,988,673.02 = 690,861,927.60/x
  3. Step 3: Cross multiply
    1,247,778,896.94x = 1,721,988,673.02 × 690,861,927.60
  4. Step 4: Simplify right side
    1,247,778,896.94x = 1,189,656,413,947,963,392
  5. Step 5: Solve for x
    x = 1,189,656,413,947,963,392/1,247,778,896.94
  6. Step 6: Final answer
    x = 953,419,245.08

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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.