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Finding the Fourth Proportional to 518,327.20, 715,047 and 303,334.24

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Solution

The fourth proportional to 518,327.20, 715,047 and 303,334.24 is: 418,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,327.20 : 715,047 = 303,334.24 : x
  2. Step 2: Convert to fraction form
    518,327.20/715,047 = 303,334.24/x
  3. Step 3: Cross multiply
    518,327.20x = 715,047 × 303,334.24
  4. Step 4: Simplify right side
    518,327.20x = 216,898,238,309.28
  5. Step 5: Solve for x
    x = 216,898,238,309.28/518,327.20
  6. Step 6: Final answer
    x = 418,458.14

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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.