Home / 1,217,960,642.60-1,680,497,610.92-689,324,628.49

Finding the Fourth Proportional to 1,217,960,642.60, 1,680,497,610.92 and 689,324,628.49

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Solution

The fourth proportional to 1,217,960,642.60, 1,680,497,610.92 and 689,324,628.49 is: 951,104,946.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,960,642.60 : 1,680,497,610.92 = 689,324,628.49 : x
  2. Step 2: Convert to fraction form
    1,217,960,642.60/1,680,497,610.92 = 689,324,628.49/x
  3. Step 3: Cross multiply
    1,217,960,642.60x = 1,680,497,610.92 × 689,324,628.49
  4. Step 4: Simplify right side
    1,217,960,642.60x = 1,158,408,391,327,569,664
  5. Step 5: Solve for x
    x = 1,158,408,391,327,569,664/1,217,960,642.60
  6. Step 6: Final answer
    x = 951,104,946.09

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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.