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Finding the Fourth Proportional to 529,891.74, 731,034.96 and 300,400.38

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Solution

The fourth proportional to 529,891.74, 731,034.96 and 300,400.38 is: 414,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,891.74 : 731,034.96 = 300,400.38 : x
  2. Step 2: Convert to fraction form
    529,891.74/731,034.96 = 300,400.38/x
  3. Step 3: Cross multiply
    529,891.74x = 731,034.96 × 300,400.38
  4. Step 4: Simplify right side
    529,891.74x = 219,603,179,777.29
  5. Step 5: Solve for x
    x = 219,603,179,777.29/529,891.74
  6. Step 6: Final answer
    x = 414,430.28

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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.