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Finding the Fourth Proportional to 709,418.02, 978,853.44 and 451,397.38

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Solution

The fourth proportional to 709,418.02, 978,853.44 and 451,397.38 is: 622,837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,418.02 : 978,853.44 = 451,397.38 : x
  2. Step 2: Convert to fraction form
    709,418.02/978,853.44 = 451,397.38/x
  3. Step 3: Cross multiply
    709,418.02x = 978,853.44 × 451,397.38
  4. Step 4: Simplify right side
    709,418.02x = 441,851,878,219.99
  5. Step 5: Solve for x
    x = 441,851,878,219.99/709,418.02
  6. Step 6: Final answer
    x = 622,837.12

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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.