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Finding the Fourth Proportional to 872,754.68, 1,204,393.86 and 490,773.32

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Solution

The fourth proportional to 872,754.68, 1,204,393.86 and 490,773.32 is: 677,262.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,754.68 : 1,204,393.86 = 490,773.32 : x
  2. Step 2: Convert to fraction form
    872,754.68/1,204,393.86 = 490,773.32/x
  3. Step 3: Cross multiply
    872,754.68x = 1,204,393.86 × 490,773.32
  4. Step 4: Simplify right side
    872,754.68x = 591,084,373,259.82
  5. Step 5: Solve for x
    x = 591,084,373,259.82/872,754.68
  6. Step 6: Final answer
    x = 677,262.91

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Double scale
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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.