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Finding the Fourth Proportional to 883,687.60, 1,325,920.20 and 410,129.20

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Solution

The fourth proportional to 883,687.60, 1,325,920.20 and 410,129.20 is: 615,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,687.60 : 1,325,920.20 = 410,129.20 : x
  2. Step 2: Convert to fraction form
    883,687.60/1,325,920.20 = 410,129.20/x
  3. Step 3: Cross multiply
    883,687.60x = 1,325,920.20 × 410,129.20
  4. Step 4: Simplify right side
    883,687.60x = 543,798,590,889.84
  5. Step 5: Solve for x
    x = 543,798,590,889.84/883,687.60
  6. Step 6: Final answer
    x = 615,374.25

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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.