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Finding the Fourth Proportional to 518,387.45, 777,464.53 and 185,963.45

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Solution

The fourth proportional to 518,387.45, 777,464.53 and 185,963.45 is: 278,903.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,387.45 : 777,464.53 = 185,963.45 : x
  2. Step 2: Convert to fraction form
    518,387.45/777,464.53 = 185,963.45/x
  3. Step 3: Cross multiply
    518,387.45x = 777,464.53 × 185,963.45
  4. Step 4: Simplify right side
    518,387.45x = 144,579,981,899.20
  5. Step 5: Solve for x
    x = 144,579,981,899.20/518,387.45
  6. Step 6: Final answer
    x = 278,903.32

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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.