Home / 909,255.40-1,363,937.70-278,174.68

Finding the Fourth Proportional to 909,255.40, 1,363,937.70 and 278,174.68

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Solution

The fourth proportional to 909,255.40, 1,363,937.70 and 278,174.68 is: 417,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,255.40 : 1,363,937.70 = 278,174.68 : x
  2. Step 2: Convert to fraction form
    909,255.40/1,363,937.70 = 278,174.68/x
  3. Step 3: Cross multiply
    909,255.40x = 1,363,937.70 × 278,174.68
  4. Step 4: Simplify right side
    909,255.40x = 379,412,933,237.44
  5. Step 5: Solve for x
    x = 379,412,933,237.44/909,255.40
  6. Step 6: Final answer
    x = 417,278.72

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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.