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Finding the Fourth Proportional to 554,426.58, 765,104.97 and 312,711.12

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Solution

The fourth proportional to 554,426.58, 765,104.97 and 312,711.12 is: 431,539.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,426.58 : 765,104.97 = 312,711.12 : x
  2. Step 2: Convert to fraction form
    554,426.58/765,104.97 = 312,711.12/x
  3. Step 3: Cross multiply
    554,426.58x = 765,104.97 × 312,711.12
  4. Step 4: Simplify right side
    554,426.58x = 239,256,832,086.27
  5. Step 5: Solve for x
    x = 239,256,832,086.27/554,426.58
  6. Step 6: Final answer
    x = 431,539.25

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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.