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Finding the Fourth Proportional to 554,366.96, 765,022.68 and 312,651.62

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Solution

The fourth proportional to 554,366.96, 765,022.68 and 312,651.62 is: 431,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,366.96 : 765,022.68 = 312,651.62 : x
  2. Step 2: Convert to fraction form
    554,366.96/765,022.68 = 312,651.62/x
  3. Step 3: Cross multiply
    554,366.96x = 765,022.68 × 312,651.62
  4. Step 4: Simplify right side
    554,366.96x = 239,185,580,238.74
  5. Step 5: Solve for x
    x = 239,185,580,238.74/554,366.96
  6. Step 6: Final answer
    x = 431,457.13

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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.