Home / 628,907.28-867,756.96-374,208.72

Finding the Fourth Proportional to 628,907.28, 867,756.96 and 374,208.72

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Solution

The fourth proportional to 628,907.28, 867,756.96 and 374,208.72 is: 516,327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,907.28 : 867,756.96 = 374,208.72 : x
  2. Step 2: Convert to fraction form
    628,907.28/867,756.96 = 374,208.72/x
  3. Step 3: Cross multiply
    628,907.28x = 867,756.96 × 374,208.72
  4. Step 4: Simplify right side
    628,907.28x = 324,722,221,272.69
  5. Step 5: Solve for x
    x = 324,722,221,272.69/628,907.28
  6. Step 6: Final answer
    x = 516,327.66

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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.