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Finding the Fourth Proportional to 659,409.36, 988,435.48 and 299,830.32

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Solution

The fourth proportional to 659,409.36, 988,435.48 and 299,830.32 is: 449,436.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,409.36 : 988,435.48 = 299,830.32 : x
  2. Step 2: Convert to fraction form
    659,409.36/988,435.48 = 299,830.32/x
  3. Step 3: Cross multiply
    659,409.36x = 988,435.48 × 299,830.32
  4. Step 4: Simplify right side
    659,409.36x = 296,362,926,267.75
  5. Step 5: Solve for x
    x = 296,362,926,267.75/659,409.36
  6. Step 6: Final answer
    x = 449,436.94

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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.