Home / 379,744.05-569,117.79-279,434.55

Finding the Fourth Proportional to 379,744.05, 569,117.79 and 279,434.55

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Solution

The fourth proportional to 379,744.05, 569,117.79 and 279,434.55 is: 418,785.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,744.05 : 569,117.79 = 279,434.55 : x
  2. Step 2: Convert to fraction form
    379,744.05/569,117.79 = 279,434.55/x
  3. Step 3: Cross multiply
    379,744.05x = 569,117.79 × 279,434.55
  4. Step 4: Simplify right side
    379,744.05x = 159,031,173,545.65
  5. Step 5: Solve for x
    x = 159,031,173,545.65/379,744.05
  6. Step 6: Final answer
    x = 418,785.16

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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.