Home / 1,439,120.28-2,158,304.04-427,969.74

Finding the Fourth Proportional to 1,439,120.28, 2,158,304.04 and 427,969.74

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Solution

The fourth proportional to 1,439,120.28, 2,158,304.04 and 427,969.74 is: 641,842.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,120.28 : 2,158,304.04 = 427,969.74 : x
  2. Step 2: Convert to fraction form
    1,439,120.28/2,158,304.04 = 427,969.74/x
  3. Step 3: Cross multiply
    1,439,120.28x = 2,158,304.04 × 427,969.74
  4. Step 4: Simplify right side
    1,439,120.28x = 923,688,818,839.75
  5. Step 5: Solve for x
    x = 923,688,818,839.75/1,439,120.28
  6. Step 6: Final answer
    x = 641,842.68

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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.