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Finding the Fourth Proportional to 659,868.16, 989,604.80 and 344,152.80

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Solution

The fourth proportional to 659,868.16, 989,604.80 and 344,152.80 is: 516,126.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,868.16 : 989,604.80 = 344,152.80 : x
  2. Step 2: Convert to fraction form
    659,868.16/989,604.80 = 344,152.80/x
  3. Step 3: Cross multiply
    659,868.16x = 989,604.80 × 344,152.80
  4. Step 4: Simplify right side
    659,868.16x = 340,575,262,813.44
  5. Step 5: Solve for x
    x = 340,575,262,813.44/659,868.16
  6. Step 6: Final answer
    x = 516,126.23

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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.