Home / 689,157,235.49-951,117,387.94-391,844,025.82

Finding the Fourth Proportional to 689,157,235.49, 951,117,387.94 and 391,844,025.82

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Solution

The fourth proportional to 689,157,235.49, 951,117,387.94 and 391,844,025.82 is: 540,790,471.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,157,235.49 : 951,117,387.94 = 391,844,025.82 : x
  2. Step 2: Convert to fraction form
    689,157,235.49/951,117,387.94 = 391,844,025.82/x
  3. Step 3: Cross multiply
    689,157,235.49x = 951,117,387.94 × 391,844,025.82
  4. Step 4: Simplify right side
    689,157,235.49x = 372,689,666,314,145,728
  5. Step 5: Solve for x
    x = 372,689,666,314,145,728/689,157,235.49
  6. Step 6: Final answer
    x = 540,790,471.49

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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.