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Finding the Fourth Proportional to 668,401.80, 1,002,602.70 and 662,496.90

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Solution

The fourth proportional to 668,401.80, 1,002,602.70 and 662,496.90 is: 993,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,401.80 : 1,002,602.70 = 662,496.90 : x
  2. Step 2: Convert to fraction form
    668,401.80/1,002,602.70 = 662,496.90/x
  3. Step 3: Cross multiply
    668,401.80x = 1,002,602.70 × 662,496.90
  4. Step 4: Simplify right side
    668,401.80x = 664,221,180,681.63
  5. Step 5: Solve for x
    x = 664,221,180,681.63/668,401.80
  6. Step 6: Final answer
    x = 993,745.35

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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.