Home / 920,708.28-1,381,268.46-281,068.86

Finding the Fourth Proportional to 920,708.28, 1,381,268.46 and 281,068.86

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Solution

The fourth proportional to 920,708.28, 1,381,268.46 and 281,068.86 is: 421,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,708.28 : 1,381,268.46 = 281,068.86 : x
  2. Step 2: Convert to fraction form
    920,708.28/1,381,268.46 = 281,068.86/x
  3. Step 3: Cross multiply
    920,708.28x = 1,381,268.46 × 281,068.86
  4. Step 4: Simplify right side
    920,708.28x = 388,231,557,639.92
  5. Step 5: Solve for x
    x = 388,231,557,639.92/920,708.28
  6. Step 6: Final answer
    x = 421,666.20

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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.