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Finding the Fourth Proportional to 665,364.20, 998,672.70 and 350,047.40

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Solution

The fourth proportional to 665,364.20, 998,672.70 and 350,047.40 is: 525,400.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,364.20 : 998,672.70 = 350,047.40 : x
  2. Step 2: Convert to fraction form
    665,364.20/998,672.70 = 350,047.40/x
  3. Step 3: Cross multiply
    665,364.20x = 998,672.70 × 350,047.40
  4. Step 4: Simplify right side
    665,364.20x = 349,582,782,085.98
  5. Step 5: Solve for x
    x = 349,582,782,085.98/665,364.20
  6. Step 6: Final answer
    x = 525,400.65

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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.