Home / 515,261.07-773,114.09-278,770.23

Finding the Fourth Proportional to 515,261.07, 773,114.09 and 278,770.23

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Solution

The fourth proportional to 515,261.07, 773,114.09 and 278,770.23 is: 418,275.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,261.07 : 773,114.09 = 278,770.23 : x
  2. Step 2: Convert to fraction form
    515,261.07/773,114.09 = 278,770.23/x
  3. Step 3: Cross multiply
    515,261.07x = 773,114.09 × 278,770.23
  4. Step 4: Simplify right side
    515,261.07x = 215,521,191,291.69
  5. Step 5: Solve for x
    x = 215,521,191,291.69/515,261.07
  6. Step 6: Final answer
    x = 418,275.71

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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.