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Finding the Fourth Proportional to 660,404.92, 989,915.99 and 276,373.80

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Solution

The fourth proportional to 660,404.92, 989,915.99 and 276,373.80 is: 414,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,404.92 : 989,915.99 = 276,373.80 : x
  2. Step 2: Convert to fraction form
    660,404.92/989,915.99 = 276,373.80/x
  3. Step 3: Cross multiply
    660,404.92x = 989,915.99 × 276,373.80
  4. Step 4: Simplify right side
    660,404.92x = 273,586,842,354.70
  5. Step 5: Solve for x
    x = 273,586,842,354.70/660,404.92
  6. Step 6: Final answer
    x = 414,271.36

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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.