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Finding the Fourth Proportional to 715,562.13, 987,454.83 and 409,628.37

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Solution

The fourth proportional to 715,562.13, 987,454.83 and 409,628.37 is: 565,275.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,562.13 : 987,454.83 = 409,628.37 : x
  2. Step 2: Convert to fraction form
    715,562.13/987,454.83 = 409,628.37/x
  3. Step 3: Cross multiply
    715,562.13x = 987,454.83 × 409,628.37
  4. Step 4: Simplify right side
    715,562.13x = 404,489,512,461.53
  5. Step 5: Solve for x
    x = 404,489,512,461.53/715,562.13
  6. Step 6: Final answer
    x = 565,275.18

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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.