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Finding the Fourth Proportional to 518,408.39, 715,418.75 and 303,528.35

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Solution

The fourth proportional to 518,408.39, 715,418.75 and 303,528.35 is: 418,878.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,408.39 : 715,418.75 = 303,528.35 : x
  2. Step 2: Convert to fraction form
    518,408.39/715,418.75 = 303,528.35/x
  3. Step 3: Cross multiply
    518,408.39x = 715,418.75 × 303,528.35
  4. Step 4: Simplify right side
    518,408.39x = 217,149,871,228.92
  5. Step 5: Solve for x
    x = 217,149,871,228.92/518,408.39
  6. Step 6: Final answer
    x = 418,878.00

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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.