Home / 850,728.60-1,276,265.70-289,819.80

Finding the Fourth Proportional to 850,728.60, 1,276,265.70 and 289,819.80

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Solution

The fourth proportional to 850,728.60, 1,276,265.70 and 289,819.80 is: 434,788.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,728.60 : 1,276,265.70 = 289,819.80 : x
  2. Step 2: Convert to fraction form
    850,728.60/1,276,265.70 = 289,819.80/x
  3. Step 3: Cross multiply
    850,728.60x = 1,276,265.70 × 289,819.80
  4. Step 4: Simplify right side
    850,728.60x = 369,887,069,920.86
  5. Step 5: Solve for x
    x = 369,887,069,920.86/850,728.60
  6. Step 6: Final answer
    x = 434,788.57

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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.