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Finding the Fourth Proportional to 640,546.43, 883,923.53 and 350,172.98

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Solution

The fourth proportional to 640,546.43, 883,923.53 and 350,172.98 is: 483,222.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,546.43 : 883,923.53 = 350,172.98 : x
  2. Step 2: Convert to fraction form
    640,546.43/883,923.53 = 350,172.98/x
  3. Step 3: Cross multiply
    640,546.43x = 883,923.53 × 350,172.98
  4. Step 4: Simplify right side
    640,546.43x = 309,526,130,421.74
  5. Step 5: Solve for x
    x = 309,526,130,421.74/640,546.43
  6. Step 6: Final answer
    x = 483,222.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.