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Finding the Fourth Proportional to 621,859.20, 932,788.80 and 486,556.80

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Solution

The fourth proportional to 621,859.20, 932,788.80 and 486,556.80 is: 729,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,859.20 : 932,788.80 = 486,556.80 : x
  2. Step 2: Convert to fraction form
    621,859.20/932,788.80 = 486,556.80/x
  3. Step 3: Cross multiply
    621,859.20x = 932,788.80 × 486,556.80
  4. Step 4: Simplify right side
    621,859.20x = 453,854,733,603.84
  5. Step 5: Solve for x
    x = 453,854,733,603.84/621,859.20
  6. Step 6: Final answer
    x = 729,835.20

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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.