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Finding the Fourth Proportional to 740,981, 1,022,554.74 and 401,449.22

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Solution

The fourth proportional to 740,981, 1,022,554.74 and 401,449.22 is: 554,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,981 : 1,022,554.74 = 401,449.22 : x
  2. Step 2: Convert to fraction form
    740,981/1,022,554.74 = 401,449.22/x
  3. Step 3: Cross multiply
    740,981x = 1,022,554.74 × 401,449.22
  4. Step 4: Simplify right side
    740,981x = 410,503,802,780.30
  5. Step 5: Solve for x
    x = 410,503,802,780.30/740,981
  6. Step 6: Final answer
    x = 554,000.44

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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.