Home / 450,171.85-621,304.55-280,460.65

Finding the Fourth Proportional to 450,171.85, 621,304.55 and 280,460.65

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Solution

The fourth proportional to 450,171.85, 621,304.55 and 280,460.65 is: 387,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,171.85 : 621,304.55 = 280,460.65 : x
  2. Step 2: Convert to fraction form
    450,171.85/621,304.55 = 280,460.65/x
  3. Step 3: Cross multiply
    450,171.85x = 621,304.55 × 280,460.65
  4. Step 4: Simplify right side
    450,171.85x = 174,251,476,538.65
  5. Step 5: Solve for x
    x = 174,251,476,538.65/450,171.85
  6. Step 6: Final answer
    x = 387,077.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.