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Finding the Fourth Proportional to 640,522.53, 883,938.96 and 354,061.04

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Solution

The fourth proportional to 640,522.53, 883,938.96 and 354,061.04 is: 488,614.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,522.53 : 883,938.96 = 354,061.04 : x
  2. Step 2: Convert to fraction form
    640,522.53/883,938.96 = 354,061.04/x
  3. Step 3: Cross multiply
    640,522.53x = 883,938.96 × 354,061.04
  4. Step 4: Simplify right side
    640,522.53x = 312,968,343,054.42
  5. Step 5: Solve for x
    x = 312,968,343,054.42/640,522.53
  6. Step 6: Final answer
    x = 488,614.11

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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.