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Finding the Fourth Proportional to 554,425.08, 765,102.90 and 312,709.65

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Solution

The fourth proportional to 554,425.08, 765,102.90 and 312,709.65 is: 431,537.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,425.08 : 765,102.90 = 312,709.65 : x
  2. Step 2: Convert to fraction form
    554,425.08/765,102.90 = 312,709.65/x
  3. Step 3: Cross multiply
    554,425.08x = 765,102.90 × 312,709.65
  4. Step 4: Simplify right side
    554,425.08x = 239,255,060,072.99
  5. Step 5: Solve for x
    x = 239,255,060,072.99/554,425.08
  6. Step 6: Final answer
    x = 431,537.22

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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.