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Finding the Fourth Proportional to 518,727, 716,433.75 and 348,665.88

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Solution

The fourth proportional to 518,727, 716,433.75 and 348,665.88 is: 481,555.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,727 : 716,433.75 = 348,665.88 : x
  2. Step 2: Convert to fraction form
    518,727/716,433.75 = 348,665.88/x
  3. Step 3: Cross multiply
    518,727x = 716,433.75 × 348,665.88
  4. Step 4: Simplify right side
    518,727x = 249,796,003,905.45
  5. Step 5: Solve for x
    x = 249,796,003,905.45/518,727
  6. Step 6: Final answer
    x = 481,555.82

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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.