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Finding the Fourth Proportional to 554,422.16, 765,056.58 and 312,764.12

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Solution

The fourth proportional to 554,422.16, 765,056.58 and 312,764.12 is: 431,588.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,422.16 : 765,056.58 = 312,764.12 : x
  2. Step 2: Convert to fraction form
    554,422.16/765,056.58 = 312,764.12/x
  3. Step 3: Cross multiply
    554,422.16x = 765,056.58 × 312,764.12
  4. Step 4: Simplify right side
    554,422.16x = 239,282,244,168.63
  5. Step 5: Solve for x
    x = 239,282,244,168.63/554,422.16
  6. Step 6: Final answer
    x = 431,588.53

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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.