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Finding the Fourth Proportional to 640,383.60, 883,732.11 and 350,001.03

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Solution

The fourth proportional to 640,383.60, 883,732.11 and 350,001.03 is: 483,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,383.60 : 883,732.11 = 350,001.03 : x
  2. Step 2: Convert to fraction form
    640,383.60/883,732.11 = 350,001.03/x
  3. Step 3: Cross multiply
    640,383.60x = 883,732.11 × 350,001.03
  4. Step 4: Simplify right side
    640,383.60x = 309,307,148,744.07
  5. Step 5: Solve for x
    x = 309,307,148,744.07/640,383.60
  6. Step 6: Final answer
    x = 483,002.92

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1.5x scale

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.