Home / 1,215,785,487.71-1,677,785,408.19-658,868,534.79

Finding the Fourth Proportional to 1,215,785,487.71, 1,677,785,408.19 and 658,868,534.79

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Solution

The fourth proportional to 1,215,785,487.71, 1,677,785,408.19 and 658,868,534.79 is: 909,239,355.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,785,487.71 : 1,677,785,408.19 = 658,868,534.79 : x
  2. Step 2: Convert to fraction form
    1,215,785,487.71/1,677,785,408.19 = 658,868,534.79/x
  3. Step 3: Cross multiply
    1,215,785,487.71x = 1,677,785,408.19 × 658,868,534.79
  4. Step 4: Simplify right side
    1,215,785,487.71x = 1,105,440,013,586,187,392
  5. Step 5: Solve for x
    x = 1,105,440,013,586,187,392/1,215,785,487.71
  6. Step 6: Final answer
    x = 909,239,355.76

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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.