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Finding the Fourth Proportional to 607,789, 838,748.82 and 339,517

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Solution

The fourth proportional to 607,789, 838,748.82 and 339,517 is: 468,533.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,789 : 838,748.82 = 339,517 : x
  2. Step 2: Convert to fraction form
    607,789/838,748.82 = 339,517/x
  3. Step 3: Cross multiply
    607,789x = 838,748.82 × 339,517
  4. Step 4: Simplify right side
    607,789x = 284,769,483,119.94
  5. Step 5: Solve for x
    x = 284,769,483,119.94/607,789
  6. Step 6: Final answer
    x = 468,533.46

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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.