Home / 763,709.60-1,145,564.40-656,400.80

Finding the Fourth Proportional to 763,709.60, 1,145,564.40 and 656,400.80

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Solution

The fourth proportional to 763,709.60, 1,145,564.40 and 656,400.80 is: 984,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,709.60 : 1,145,564.40 = 656,400.80 : x
  2. Step 2: Convert to fraction form
    763,709.60/1,145,564.40 = 656,400.80/x
  3. Step 3: Cross multiply
    763,709.60x = 1,145,564.40 × 656,400.80
  4. Step 4: Simplify right side
    763,709.60x = 751,949,388,611.52
  5. Step 5: Solve for x
    x = 751,949,388,611.52/763,709.60
  6. Step 6: Final answer
    x = 984,601.20

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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.