Home / 771,509.25-1,064,436.73-499,785.44

Finding the Fourth Proportional to 771,509.25, 1,064,436.73 and 499,785.44

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Solution

The fourth proportional to 771,509.25, 1,064,436.73 and 499,785.44 is: 689,544.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,509.25 : 1,064,436.73 = 499,785.44 : x
  2. Step 2: Convert to fraction form
    771,509.25/1,064,436.73 = 499,785.44/x
  3. Step 3: Cross multiply
    771,509.25x = 1,064,436.73 × 499,785.44
  4. Step 4: Simplify right side
    771,509.25x = 531,989,972,883.56
  5. Step 5: Solve for x
    x = 531,989,972,883.56/771,509.25
  6. Step 6: Final answer
    x = 689,544.52

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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.