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Finding the Fourth Proportional to 554,583.16, 765,418.92 and 312,934.24

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Solution

The fourth proportional to 554,583.16, 765,418.92 and 312,934.24 is: 431,902.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,583.16 : 765,418.92 = 312,934.24 : x
  2. Step 2: Convert to fraction form
    554,583.16/765,418.92 = 312,934.24/x
  3. Step 3: Cross multiply
    554,583.16x = 765,418.92 × 312,934.24
  4. Step 4: Simplify right side
    554,583.16x = 239,525,788,011.82
  5. Step 5: Solve for x
    x = 239,525,788,011.82/554,583.16
  6. Step 6: Final answer
    x = 431,902.38

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1.5x scale

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.