Home / 838,405.44-1,256,767.68-389,441.76

Finding the Fourth Proportional to 838,405.44, 1,256,767.68 and 389,441.76

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Solution

The fourth proportional to 838,405.44, 1,256,767.68 and 389,441.76 is: 583,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,405.44 : 1,256,767.68 = 389,441.76 : x
  2. Step 2: Convert to fraction form
    838,405.44/1,256,767.68 = 389,441.76/x
  3. Step 3: Cross multiply
    838,405.44x = 1,256,767.68 × 389,441.76
  4. Step 4: Simplify right side
    838,405.44x = 489,437,817,210.32
  5. Step 5: Solve for x
    x = 489,437,817,210.32/838,405.44
  6. Step 6: Final answer
    x = 583,772.23

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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.