Home / 689,157,237.96-951,117,391.34-391,844,028.28

Finding the Fourth Proportional to 689,157,237.96, 951,117,391.34 and 391,844,028.28

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Solution

The fourth proportional to 689,157,237.96, 951,117,391.34 and 391,844,028.28 is: 540,790,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,157,237.96 : 951,117,391.34 = 391,844,028.28 : x
  2. Step 2: Convert to fraction form
    689,157,237.96/951,117,391.34 = 391,844,028.28/x
  3. Step 3: Cross multiply
    689,157,237.96x = 951,117,391.34 × 391,844,028.28
  4. Step 4: Simplify right side
    689,157,237.96x = 372,689,669,989,830,784
  5. Step 5: Solve for x
    x = 372,689,669,989,830,784/689,157,237.96
  6. Step 6: Final answer
    x = 540,790,474.89

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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.