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Finding the Fourth Proportional to 659,628.40, 989,442.60 and 305,334.40

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Solution

The fourth proportional to 659,628.40, 989,442.60 and 305,334.40 is: 458,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,628.40 : 989,442.60 = 305,334.40 : x
  2. Step 2: Convert to fraction form
    659,628.40/989,442.60 = 305,334.40/x
  3. Step 3: Cross multiply
    659,628.40x = 989,442.60 × 305,334.40
  4. Step 4: Simplify right side
    659,628.40x = 302,110,862,605.44
  5. Step 5: Solve for x
    x = 302,110,862,605.44/659,628.40
  6. Step 6: Final answer
    x = 458,001.60

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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.