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Finding the Fourth Proportional to 680,880.16, 939,556.56 and 379,102.24

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Solution

The fourth proportional to 680,880.16, 939,556.56 and 379,102.24 is: 523,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,880.16 : 939,556.56 = 379,102.24 : x
  2. Step 2: Convert to fraction form
    680,880.16/939,556.56 = 379,102.24/x
  3. Step 3: Cross multiply
    680,880.16x = 939,556.56 × 379,102.24
  4. Step 4: Simplify right side
    680,880.16x = 356,187,996,502.69
  5. Step 5: Solve for x
    x = 356,187,996,502.69/680,880.16
  6. Step 6: Final answer
    x = 523,128.76

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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.