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Finding the Fourth Proportional to 662,647.80, 991,638.90 and 606,660.60

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Solution

The fourth proportional to 662,647.80, 991,638.90 and 606,660.60 is: 907,855.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,647.80 : 991,638.90 = 606,660.60 : x
  2. Step 2: Convert to fraction form
    662,647.80/991,638.90 = 606,660.60/x
  3. Step 3: Cross multiply
    662,647.80x = 991,638.90 × 606,660.60
  4. Step 4: Simplify right side
    662,647.80x = 601,588,250,057.34
  5. Step 5: Solve for x
    x = 601,588,250,057.34/662,647.80
  6. Step 6: Final answer
    x = 907,855.20

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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.