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Finding the Fourth Proportional to 554,807.91, 765,591.31 and 339,918.76

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Solution

The fourth proportional to 554,807.91, 765,591.31 and 339,918.76 is: 469,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,807.91 : 765,591.31 = 339,918.76 : x
  2. Step 2: Convert to fraction form
    554,807.91/765,591.31 = 339,918.76/x
  3. Step 3: Cross multiply
    554,807.91x = 765,591.31 × 339,918.76
  4. Step 4: Simplify right side
    554,807.91x = 260,238,846,848.00
  5. Step 5: Solve for x
    x = 260,238,846,848.00/554,807.91
  6. Step 6: Final answer
    x = 469,061.17

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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.