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Finding the Fourth Proportional to 643,576,815.80, 965,365,223.70 and 593,188,335.80

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Solution

The fourth proportional to 643,576,815.80, 965,365,223.70 and 593,188,335.80 is: 889,782,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,576,815.80 : 965,365,223.70 = 593,188,335.80 : x
  2. Step 2: Convert to fraction form
    643,576,815.80/965,365,223.70 = 593,188,335.80/x
  3. Step 3: Cross multiply
    643,576,815.80x = 965,365,223.70 × 593,188,335.80
  4. Step 4: Simplify right side
    643,576,815.80x = 572,643,390,485,797,696
  5. Step 5: Solve for x
    x = 572,643,390,485,797,696/643,576,815.80
  6. Step 6: Final answer
    x = 889,782,503.70

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Double scale
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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.