Home / 919,338.78-1,379,008.17-288,301.80

Finding the Fourth Proportional to 919,338.78, 1,379,008.17 and 288,301.80

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Solution

The fourth proportional to 919,338.78, 1,379,008.17 and 288,301.80 is: 432,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,338.78 : 1,379,008.17 = 288,301.80 : x
  2. Step 2: Convert to fraction form
    919,338.78/1,379,008.17 = 288,301.80/x
  3. Step 3: Cross multiply
    919,338.78x = 1,379,008.17 × 288,301.80
  4. Step 4: Simplify right side
    919,338.78x = 397,570,537,625.71
  5. Step 5: Solve for x
    x = 397,570,537,625.71/919,338.78
  6. Step 6: Final answer
    x = 432,452.70

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Similar ratio
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1.5x scale

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.