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Finding the Fourth Proportional to 486,850.40, 730,275.60 and 403,906.40

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Solution

The fourth proportional to 486,850.40, 730,275.60 and 403,906.40 is: 605,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,850.40 : 730,275.60 = 403,906.40 : x
  2. Step 2: Convert to fraction form
    486,850.40/730,275.60 = 403,906.40/x
  3. Step 3: Cross multiply
    486,850.40x = 730,275.60 × 403,906.40
  4. Step 4: Simplify right side
    486,850.40x = 294,962,988,603.84
  5. Step 5: Solve for x
    x = 294,962,988,603.84/486,850.40
  6. Step 6: Final answer
    x = 605,859.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.