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Finding the Fourth Proportional to 540,077.36, 745,284.24 and 310,617.32

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Solution

The fourth proportional to 540,077.36, 745,284.24 and 310,617.32 is: 428,638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,077.36 : 745,284.24 = 310,617.32 : x
  2. Step 2: Convert to fraction form
    540,077.36/745,284.24 = 310,617.32/x
  3. Step 3: Cross multiply
    540,077.36x = 745,284.24 × 310,617.32
  4. Step 4: Simplify right side
    540,077.36x = 231,498,189,540.62
  5. Step 5: Solve for x
    x = 231,498,189,540.62/540,077.36
  6. Step 6: Final answer
    x = 428,638.95

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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.