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Finding the Fourth Proportional to 668,571.80, 1,001,496.90 and 415,074.20

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Solution

The fourth proportional to 668,571.80, 1,001,496.90 and 415,074.20 is: 621,766.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,571.80 : 1,001,496.90 = 415,074.20 : x
  2. Step 2: Convert to fraction form
    668,571.80/1,001,496.90 = 415,074.20/x
  3. Step 3: Cross multiply
    668,571.80x = 1,001,496.90 × 415,074.20
  4. Step 4: Simplify right side
    668,571.80x = 415,695,524,569.98
  5. Step 5: Solve for x
    x = 415,695,524,569.98/668,571.80
  6. Step 6: Final answer
    x = 621,766.46

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1.5x scale

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.