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Finding the Fourth Proportional to 1,260,669.33, 1,739,805.89 and 716,855.72

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Solution

The fourth proportional to 1,260,669.33, 1,739,805.89 and 716,855.72 is: 989,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,669.33 : 1,739,805.89 = 716,855.72 : x
  2. Step 2: Convert to fraction form
    1,260,669.33/1,739,805.89 = 716,855.72/x
  3. Step 3: Cross multiply
    1,260,669.33x = 1,739,805.89 × 716,855.72
  4. Step 4: Simplify right side
    1,260,669.33x = 1,247,189,791,652.88
  5. Step 5: Solve for x
    x = 1,247,189,791,652.88/1,260,669.33
  6. Step 6: Final answer
    x = 989,307.63

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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.