Home / 776,728.88-1,072,216.20-522,227.60

Finding the Fourth Proportional to 776,728.88, 1,072,216.20 and 522,227.60

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Solution

The fourth proportional to 776,728.88, 1,072,216.20 and 522,227.60 is: 720,896.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,728.88 : 1,072,216.20 = 522,227.60 : x
  2. Step 2: Convert to fraction form
    776,728.88/1,072,216.20 = 522,227.60/x
  3. Step 3: Cross multiply
    776,728.88x = 1,072,216.20 × 522,227.60
  4. Step 4: Simplify right side
    776,728.88x = 559,940,892,807.12
  5. Step 5: Solve for x
    x = 559,940,892,807.12/776,728.88
  6. Step 6: Final answer
    x = 720,896.19

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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.