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Finding the Fourth Proportional to 554,426.08, 765,104.28 and 312,710.65

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Solution

The fourth proportional to 554,426.08, 765,104.28 and 312,710.65 is: 431,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,426.08 : 765,104.28 = 312,710.65 : x
  2. Step 2: Convert to fraction form
    554,426.08/765,104.28 = 312,710.65/x
  3. Step 3: Cross multiply
    554,426.08x = 765,104.28 × 312,710.65
  4. Step 4: Simplify right side
    554,426.08x = 239,256,256,716.58
  5. Step 5: Solve for x
    x = 239,256,256,716.58/554,426.08
  6. Step 6: Final answer
    x = 431,538.60

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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.