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Finding the Fourth Proportional to 640,599.60, 959,149.80 and 462,140.40

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Solution

The fourth proportional to 640,599.60, 959,149.80 and 462,140.40 is: 691,948.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,599.60 : 959,149.80 = 462,140.40 : x
  2. Step 2: Convert to fraction form
    640,599.60/959,149.80 = 462,140.40/x
  3. Step 3: Cross multiply
    640,599.60x = 959,149.80 × 462,140.40
  4. Step 4: Simplify right side
    640,599.60x = 443,261,872,231.92
  5. Step 5: Solve for x
    x = 443,261,872,231.92/640,599.60
  6. Step 6: Final answer
    x = 691,948.41

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1.5x scale

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.