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Finding the Fourth Proportional to 772,503, 1,065,819.42 and 486,308.76

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Solution

The fourth proportional to 772,503, 1,065,819.42 and 486,308.76 is: 670,958.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,503 : 1,065,819.42 = 486,308.76 : x
  2. Step 2: Convert to fraction form
    772,503/1,065,819.42 = 486,308.76/x
  3. Step 3: Cross multiply
    772,503x = 1,065,819.42 × 486,308.76
  4. Step 4: Simplify right side
    772,503x = 518,317,320,524.12
  5. Step 5: Solve for x
    x = 518,317,320,524.12/772,503
  6. Step 6: Final answer
    x = 670,958.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.