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Finding the Fourth Proportional to 471,625.39, 649,401.55 and 355,507.53

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Solution

The fourth proportional to 471,625.39, 649,401.55 and 355,507.53 is: 489,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,625.39 : 649,401.55 = 355,507.53 : x
  2. Step 2: Convert to fraction form
    471,625.39/649,401.55 = 355,507.53/x
  3. Step 3: Cross multiply
    471,625.39x = 649,401.55 × 355,507.53
  4. Step 4: Simplify right side
    471,625.39x = 230,867,143,347.26
  5. Step 5: Solve for x
    x = 230,867,143,347.26/471,625.39
  6. Step 6: Final answer
    x = 489,513.82

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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.