Home / 527,544.06-727,928.55-312,649.44

Finding the Fourth Proportional to 527,544.06, 727,928.55 and 312,649.44

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Solution

The fourth proportional to 527,544.06, 727,928.55 and 312,649.44 is: 431,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,544.06 : 727,928.55 = 312,649.44 : x
  2. Step 2: Convert to fraction form
    527,544.06/727,928.55 = 312,649.44/x
  3. Step 3: Cross multiply
    527,544.06x = 727,928.55 × 312,649.44
  4. Step 4: Simplify right side
    527,544.06x = 227,586,453,517.51
  5. Step 5: Solve for x
    x = 227,586,453,517.51/527,544.06
  6. Step 6: Final answer
    x = 431,407.48

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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.