Home / 679,706.92-1,019,560.32-323,641.45

Finding the Fourth Proportional to 679,706.92, 1,019,560.32 and 323,641.45

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Solution

The fourth proportional to 679,706.92, 1,019,560.32 and 323,641.45 is: 485,462.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,706.92 : 1,019,560.32 = 323,641.45 : x
  2. Step 2: Convert to fraction form
    679,706.92/1,019,560.32 = 323,641.45/x
  3. Step 3: Cross multiply
    679,706.92x = 1,019,560.32 × 323,641.45
  4. Step 4: Simplify right side
    679,706.92x = 329,971,981,136.37
  5. Step 5: Solve for x
    x = 329,971,981,136.37/679,706.92
  6. Step 6: Final answer
    x = 485,462.15

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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.