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Finding the Fourth Proportional to 554,468.95, 765,175.95 and 312,756.31

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Solution

The fourth proportional to 554,468.95, 765,175.95 and 312,756.31 is: 431,608.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,468.95 : 765,175.95 = 312,756.31 : x
  2. Step 2: Convert to fraction form
    554,468.95/765,175.95 = 312,756.31/x
  3. Step 3: Cross multiply
    554,468.95x = 765,175.95 × 312,756.31
  4. Step 4: Simplify right side
    554,468.95x = 239,313,606,622.74
  5. Step 5: Solve for x
    x = 239,313,606,622.74/554,468.95
  6. Step 6: Final answer
    x = 431,608.67

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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.