Home / 778,519.35-1,167,218.57-478,379.81

Finding the Fourth Proportional to 778,519.35, 1,167,218.57 and 478,379.81

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Solution

The fourth proportional to 778,519.35, 1,167,218.57 and 478,379.81 is: 717,225.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,519.35 : 1,167,218.57 = 478,379.81 : x
  2. Step 2: Convert to fraction form
    778,519.35/1,167,218.57 = 478,379.81/x
  3. Step 3: Cross multiply
    778,519.35x = 1,167,218.57 × 478,379.81
  4. Step 4: Simplify right side
    778,519.35x = 558,373,801,859.07
  5. Step 5: Solve for x
    x = 558,373,801,859.07/778,519.35
  6. Step 6: Final answer
    x = 717,225.34

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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.