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Finding the Fourth Proportional to 518,978.74, 716,025.81 and 304,050.10

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Solution

The fourth proportional to 518,978.74, 716,025.81 and 304,050.10 is: 419,492.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,978.74 : 716,025.81 = 304,050.10 : x
  2. Step 2: Convert to fraction form
    518,978.74/716,025.81 = 304,050.10/x
  3. Step 3: Cross multiply
    518,978.74x = 716,025.81 × 304,050.10
  4. Step 4: Simplify right side
    518,978.74x = 217,707,719,133.08
  5. Step 5: Solve for x
    x = 217,707,719,133.08/518,978.74
  6. Step 6: Final answer
    x = 419,492.56

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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.