Home / 909,255.90-1,363,938.45-278,175.18

Finding the Fourth Proportional to 909,255.90, 1,363,938.45 and 278,175.18

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Solution

The fourth proportional to 909,255.90, 1,363,938.45 and 278,175.18 is: 417,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,255.90 : 1,363,938.45 = 278,175.18 : x
  2. Step 2: Convert to fraction form
    909,255.90/1,363,938.45 = 278,175.18/x
  3. Step 3: Cross multiply
    909,255.90x = 1,363,938.45 × 278,175.18
  4. Step 4: Simplify right side
    909,255.90x = 379,413,823,837.67
  5. Step 5: Solve for x
    x = 379,413,823,837.67/909,255.90
  6. Step 6: Final answer
    x = 417,279.47

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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.