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Finding the Fourth Proportional to 883,409.60, 1,325,114.40 and 485,278.40

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Solution

The fourth proportional to 883,409.60, 1,325,114.40 and 485,278.40 is: 727,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,409.60 : 1,325,114.40 = 485,278.40 : x
  2. Step 2: Convert to fraction form
    883,409.60/1,325,114.40 = 485,278.40/x
  3. Step 3: Cross multiply
    883,409.60x = 1,325,114.40 × 485,278.40
  4. Step 4: Simplify right side
    883,409.60x = 643,049,395,848.96
  5. Step 5: Solve for x
    x = 643,049,395,848.96/883,409.60
  6. Step 6: Final answer
    x = 727,917.60

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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.