Home / 664,718.18-996,868.10-215,334.77

Finding the Fourth Proportional to 664,718.18, 996,868.10 and 215,334.77

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Solution

The fourth proportional to 664,718.18, 996,868.10 and 215,334.77 is: 322,934.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,718.18 : 996,868.10 = 215,334.77 : x
  2. Step 2: Convert to fraction form
    664,718.18/996,868.10 = 215,334.77/x
  3. Step 3: Cross multiply
    664,718.18x = 996,868.10 × 215,334.77
  4. Step 4: Simplify right side
    664,718.18x = 214,660,356,972.82
  5. Step 5: Solve for x
    x = 214,660,356,972.82/664,718.18
  6. Step 6: Final answer
    x = 322,934.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.