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Finding the Fourth Proportional to 678,009.04, 935,649.48 and 376,202.32

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Solution

The fourth proportional to 678,009.04, 935,649.48 and 376,202.32 is: 519,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,009.04 : 935,649.48 = 376,202.32 : x
  2. Step 2: Convert to fraction form
    678,009.04/935,649.48 = 376,202.32/x
  3. Step 3: Cross multiply
    678,009.04x = 935,649.48 × 376,202.32
  4. Step 4: Simplify right side
    678,009.04x = 351,993,505,082.79
  5. Step 5: Solve for x
    x = 351,993,505,082.79/678,009.04
  6. Step 6: Final answer
    x = 519,157.54

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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.