Home / 1,247,282,420.94-1,721,228,906.79-690,353,510.58

Finding the Fourth Proportional to 1,247,282,420.94, 1,721,228,906.79 and 690,353,510.58

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Solution

The fourth proportional to 1,247,282,420.94, 1,721,228,906.79 and 690,353,510.58 is: 952,676,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,282,420.94 : 1,721,228,906.79 = 690,353,510.58 : x
  2. Step 2: Convert to fraction form
    1,247,282,420.94/1,721,228,906.79 = 690,353,510.58/x
  3. Step 3: Cross multiply
    1,247,282,420.94x = 1,721,228,906.79 × 690,353,510.58
  4. Step 4: Simplify right side
    1,247,282,420.94x = 1,188,256,418,314,252,032
  5. Step 5: Solve for x
    x = 1,188,256,418,314,252,032/1,247,282,420.94
  6. Step 6: Final answer
    x = 952,676,313.21

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Double scale
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1.5x scale

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.