Home / 527,218.32-727,532.44-312,378.16

Finding the Fourth Proportional to 527,218.32, 727,532.44 and 312,378.16

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Solution

The fourth proportional to 527,218.32, 727,532.44 and 312,378.16 is: 431,064.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,218.32 : 727,532.44 = 312,378.16 : x
  2. Step 2: Convert to fraction form
    527,218.32/727,532.44 = 312,378.16/x
  3. Step 3: Cross multiply
    527,218.32x = 727,532.44 × 312,378.16
  4. Step 4: Simplify right side
    527,218.32x = 227,265,244,947.51
  5. Step 5: Solve for x
    x = 227,265,244,947.51/527,218.32
  6. Step 6: Final answer
    x = 431,064.77

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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.