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Finding the Third Proportional to 528,990 and 804,557

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Solution

The third proportional to 528,990 and 804,557 is: 1,223,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,990 : 804,557 = 804,557 : x
  2. Step 2: Convert to fraction form
    528,990/804,557 = 804,557/x
  3. Step 3: Cross multiply
    528,990x = 804,557 × 804,557
  4. Step 4: Simplify right side
    528,990x = 647,311,966,249
  5. Step 5: Solve for x
    x = 647,311,966,249/528,990
  6. Step 6: Final answer
    x = 1,223,675.24

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.