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Finding the Fourth Proportional to 540,087.09, 810,639.12 and 274,038.54

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Solution

The fourth proportional to 540,087.09, 810,639.12 and 274,038.54 is: 411,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,087.09 : 810,639.12 = 274,038.54 : x
  2. Step 2: Convert to fraction form
    540,087.09/810,639.12 = 274,038.54/x
  3. Step 3: Cross multiply
    540,087.09x = 810,639.12 × 274,038.54
  4. Step 4: Simplify right side
    540,087.09x = 222,146,361,147.08
  5. Step 5: Solve for x
    x = 222,146,361,147.08/540,087.09
  6. Step 6: Final answer
    x = 411,315.81

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1.5x scale

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.