Home / 850,859.40-1,276,289.10-780,000.60

Finding the Fourth Proportional to 850,859.40, 1,276,289.10 and 780,000.60

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Solution

The fourth proportional to 850,859.40, 1,276,289.10 and 780,000.60 is: 1,170,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,859.40 : 1,276,289.10 = 780,000.60 : x
  2. Step 2: Convert to fraction form
    850,859.40/1,276,289.10 = 780,000.60/x
  3. Step 3: Cross multiply
    850,859.40x = 1,276,289.10 × 780,000.60
  4. Step 4: Simplify right side
    850,859.40x = 995,506,263,773.46
  5. Step 5: Solve for x
    x = 995,506,263,773.46/850,859.40
  6. Step 6: Final answer
    x = 1,170,000.90

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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.