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Finding the Fourth Proportional to 640,312.02, 883,630.89 and 353,832.10

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Solution

The fourth proportional to 640,312.02, 883,630.89 and 353,832.10 is: 488,288.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,312.02 : 883,630.89 = 353,832.10 : x
  2. Step 2: Convert to fraction form
    640,312.02/883,630.89 = 353,832.10/x
  3. Step 3: Cross multiply
    640,312.02x = 883,630.89 × 353,832.10
  4. Step 4: Simplify right side
    640,312.02x = 312,656,971,224.49
  5. Step 5: Solve for x
    x = 312,656,971,224.49/640,312.02
  6. Step 6: Final answer
    x = 488,288.46

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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.