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Finding the Fourth Proportional to 613,239, 846,282.78 and 344,967

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Solution

The fourth proportional to 613,239, 846,282.78 and 344,967 is: 476,061.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,239 : 846,282.78 = 344,967 : x
  2. Step 2: Convert to fraction form
    613,239/846,282.78 = 344,967/x
  3. Step 3: Cross multiply
    613,239x = 846,282.78 × 344,967
  4. Step 4: Simplify right side
    613,239x = 291,939,631,768.26
  5. Step 5: Solve for x
    x = 291,939,631,768.26/613,239
  6. Step 6: Final answer
    x = 476,061.75

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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.