Home / 501,190.74-690,974.04-398,166.72

Finding the Fourth Proportional to 501,190.74, 690,974.04 and 398,166.72

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Solution

The fourth proportional to 501,190.74, 690,974.04 and 398,166.72 is: 548,938.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,190.74 : 690,974.04 = 398,166.72 : x
  2. Step 2: Convert to fraction form
    501,190.74/690,974.04 = 398,166.72/x
  3. Step 3: Cross multiply
    501,190.74x = 690,974.04 × 398,166.72
  4. Step 4: Simplify right side
    501,190.74x = 275,122,867,111.95
  5. Step 5: Solve for x
    x = 275,122,867,111.95/501,190.74
  6. Step 6: Final answer
    x = 548,938.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.