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Finding the Fourth Proportional to 619,261.40, 929,064.90 and 303,728.60

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Solution

The fourth proportional to 619,261.40, 929,064.90 and 303,728.60 is: 455,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,261.40 : 929,064.90 = 303,728.60 : x
  2. Step 2: Convert to fraction form
    619,261.40/929,064.90 = 303,728.60/x
  3. Step 3: Cross multiply
    619,261.40x = 929,064.90 × 303,728.60
  4. Step 4: Simplify right side
    619,261.40x = 282,183,581,386.14
  5. Step 5: Solve for x
    x = 282,183,581,386.14/619,261.40
  6. Step 6: Final answer
    x = 455,677.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.