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Finding the Fourth Proportional to 872,439, 1,203,499.26 and 585,465.72

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Solution

The fourth proportional to 872,439, 1,203,499.26 and 585,465.72 is: 807,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,439 : 1,203,499.26 = 585,465.72 : x
  2. Step 2: Convert to fraction form
    872,439/1,203,499.26 = 585,465.72/x
  3. Step 3: Cross multiply
    872,439x = 1,203,499.26 × 585,465.72
  4. Step 4: Simplify right side
    872,439x = 704,607,560,775.37
  5. Step 5: Solve for x
    x = 704,607,560,775.37/872,439
  6. Step 6: Final answer
    x = 807,629.60

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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.