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Finding the Fourth Proportional to 787,570.40, 1,182,230.40 and 488,388.80

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Solution

The fourth proportional to 787,570.40, 1,182,230.40 and 488,388.80 is: 733,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,570.40 : 1,182,230.40 = 488,388.80 : x
  2. Step 2: Convert to fraction form
    787,570.40/1,182,230.40 = 488,388.80/x
  3. Step 3: Cross multiply
    787,570.40x = 1,182,230.40 × 488,388.80
  4. Step 4: Simplify right side
    787,570.40x = 577,388,086,379.52
  5. Step 5: Solve for x
    x = 577,388,086,379.52/787,570.40
  6. Step 6: Final answer
    x = 733,125.68

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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.