Home / 692,431.60-1,039,230.60-272,009.20

Finding the Fourth Proportional to 692,431.60, 1,039,230.60 and 272,009.20

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Solution

The fourth proportional to 692,431.60, 1,039,230.60 and 272,009.20 is: 408,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,431.60 : 1,039,230.60 = 272,009.20 : x
  2. Step 2: Convert to fraction form
    692,431.60/1,039,230.60 = 272,009.20/x
  3. Step 3: Cross multiply
    692,431.60x = 1,039,230.60 × 272,009.20
  4. Step 4: Simplify right side
    692,431.60x = 282,680,284,121.52
  5. Step 5: Solve for x
    x = 282,680,284,121.52/692,431.60
  6. Step 6: Final answer
    x = 408,242.90

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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.