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Finding the Fourth Proportional to 635,980.80, 953,971.20 and 626,649.60

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Solution

The fourth proportional to 635,980.80, 953,971.20 and 626,649.60 is: 939,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,980.80 : 953,971.20 = 626,649.60 : x
  2. Step 2: Convert to fraction form
    635,980.80/953,971.20 = 626,649.60/x
  3. Step 3: Cross multiply
    635,980.80x = 953,971.20 × 626,649.60
  4. Step 4: Simplify right side
    635,980.80x = 597,805,670,891.52
  5. Step 5: Solve for x
    x = 597,805,670,891.52/635,980.80
  6. Step 6: Final answer
    x = 939,974.40

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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.