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Finding the Fourth Proportional to 518,943.36, 716,141.52 and 280,479.36

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Solution

The fourth proportional to 518,943.36, 716,141.52 and 280,479.36 is: 387,061.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,943.36 : 716,141.52 = 280,479.36 : x
  2. Step 2: Convert to fraction form
    518,943.36/716,141.52 = 280,479.36/x
  3. Step 3: Cross multiply
    518,943.36x = 716,141.52 × 280,479.36
  4. Step 4: Simplify right side
    518,943.36x = 200,862,915,199.03
  5. Step 5: Solve for x
    x = 200,862,915,199.03/518,943.36
  6. Step 6: Final answer
    x = 387,061.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.