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Finding the Fourth Proportional to 403,560.77, 552,880.76 and 388,426.73

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Solution

The fourth proportional to 403,560.77, 552,880.76 and 388,426.73 is: 532,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,560.77 : 552,880.76 = 388,426.73 : x
  2. Step 2: Convert to fraction form
    403,560.77/552,880.76 = 388,426.73/x
  3. Step 3: Cross multiply
    403,560.77x = 552,880.76 × 388,426.73
  4. Step 4: Simplify right side
    403,560.77x = 214,753,660,980.18
  5. Step 5: Solve for x
    x = 214,753,660,980.18/403,560.77
  6. Step 6: Final answer
    x = 532,147.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.