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Finding the Fourth Proportional to 696,346, 960,996.36 and 394,637.20

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Solution

The fourth proportional to 696,346, 960,996.36 and 394,637.20 is: 544,621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,346 : 960,996.36 = 394,637.20 : x
  2. Step 2: Convert to fraction form
    696,346/960,996.36 = 394,637.20/x
  3. Step 3: Cross multiply
    696,346x = 960,996.36 × 394,637.20
  4. Step 4: Simplify right side
    696,346x = 379,244,912,720.59
  5. Step 5: Solve for x
    x = 379,244,912,720.59/696,346
  6. Step 6: Final answer
    x = 544,621.37

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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.