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Finding the Fourth Proportional to 554,646.29, 765,411.73 and 312,926.69

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Solution

The fourth proportional to 554,646.29, 765,411.73 and 312,926.69 is: 431,838.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,646.29 : 765,411.73 = 312,926.69 : x
  2. Step 2: Convert to fraction form
    554,646.29/765,411.73 = 312,926.69/x
  3. Step 3: Cross multiply
    554,646.29x = 765,411.73 × 312,926.69
  4. Step 4: Simplify right side
    554,646.29x = 239,517,760,287.29
  5. Step 5: Solve for x
    x = 239,517,760,287.29/554,646.29
  6. Step 6: Final answer
    x = 431,838.75

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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.