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Finding the Fourth Proportional to 540,078.48, 745,304.76 and 298,376.64

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Solution

The fourth proportional to 540,078.48, 745,304.76 and 298,376.64 is: 411,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,078.48 : 745,304.76 = 298,376.64 : x
  2. Step 2: Convert to fraction form
    540,078.48/745,304.76 = 298,376.64/x
  3. Step 3: Cross multiply
    540,078.48x = 745,304.76 × 298,376.64
  4. Step 4: Simplify right side
    540,078.48x = 222,381,530,064.81
  5. Step 5: Solve for x
    x = 222,381,530,064.81/540,078.48
  6. Step 6: Final answer
    x = 411,757.81

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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.