Home / 768,140.20-1,152,210.30-430,834.60

Finding the Fourth Proportional to 768,140.20, 1,152,210.30 and 430,834.60

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Solution

The fourth proportional to 768,140.20, 1,152,210.30 and 430,834.60 is: 646,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,140.20 : 1,152,210.30 = 430,834.60 : x
  2. Step 2: Convert to fraction form
    768,140.20/1,152,210.30 = 430,834.60/x
  3. Step 3: Cross multiply
    768,140.20x = 1,152,210.30 × 430,834.60
  4. Step 4: Simplify right side
    768,140.20x = 496,412,063,716.38
  5. Step 5: Solve for x
    x = 496,412,063,716.38/768,140.20
  6. Step 6: Final answer
    x = 646,251.90

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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.