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Finding the Fourth Proportional to 692,515.20, 955,068.60 and 488,205.60

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Solution

The fourth proportional to 692,515.20, 955,068.60 and 488,205.60 is: 673,299.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,515.20 : 955,068.60 = 488,205.60 : x
  2. Step 2: Convert to fraction form
    692,515.20/955,068.60 = 488,205.60/x
  3. Step 3: Cross multiply
    692,515.20x = 955,068.60 × 488,205.60
  4. Step 4: Simplify right side
    692,515.20x = 466,269,838,904.16
  5. Step 5: Solve for x
    x = 466,269,838,904.16/692,515.20
  6. Step 6: Final answer
    x = 673,299.07

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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.