Home / 715,380.85-987,280.49-409,553.16

Finding the Fourth Proportional to 715,380.85, 987,280.49 and 409,553.16

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Solution

The fourth proportional to 715,380.85, 987,280.49 and 409,553.16 is: 565,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,380.85 : 987,280.49 = 409,553.16 : x
  2. Step 2: Convert to fraction form
    715,380.85/987,280.49 = 409,553.16/x
  3. Step 3: Cross multiply
    715,380.85x = 987,280.49 × 409,553.16
  4. Step 4: Simplify right side
    715,380.85x = 404,343,839,549.45
  5. Step 5: Solve for x
    x = 404,343,839,549.45/715,380.85
  6. Step 6: Final answer
    x = 565,214.80

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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.