Home / 979,971.75-1,469,957.63-315,123.75

Finding the Fourth Proportional to 979,971.75, 1,469,957.63 and 315,123.75

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Solution

The fourth proportional to 979,971.75, 1,469,957.63 and 315,123.75 is: 472,685.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,971.75 : 1,469,957.63 = 315,123.75 : x
  2. Step 2: Convert to fraction form
    979,971.75/1,469,957.63 = 315,123.75/x
  3. Step 3: Cross multiply
    979,971.75x = 1,469,957.63 × 315,123.75
  4. Step 4: Simplify right side
    979,971.75x = 463,218,560,706.71
  5. Step 5: Solve for x
    x = 463,218,560,706.71/979,971.75
  6. Step 6: Final answer
    x = 472,685.63

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Double scale
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Similar ratio
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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.