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Finding the Fourth Proportional to 450,642.52, 621,224.13 and 343,025.11

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Solution

The fourth proportional to 450,642.52, 621,224.13 and 343,025.11 is: 472,870.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,642.52 : 621,224.13 = 343,025.11 : x
  2. Step 2: Convert to fraction form
    450,642.52/621,224.13 = 343,025.11/x
  3. Step 3: Cross multiply
    450,642.52x = 621,224.13 × 343,025.11
  4. Step 4: Simplify right side
    450,642.52x = 213,095,475,527.90
  5. Step 5: Solve for x
    x = 213,095,475,527.90/450,642.52
  6. Step 6: Final answer
    x = 472,870.33

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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.