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Finding the Fourth Proportional to 1,253,370, 1,729,652.76 and 716,826

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Solution

The fourth proportional to 1,253,370, 1,729,652.76 and 716,826 is: 989,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,370 : 1,729,652.76 = 716,826 : x
  2. Step 2: Convert to fraction form
    1,253,370/1,729,652.76 = 716,826/x
  3. Step 3: Cross multiply
    1,253,370x = 1,729,652.76 × 716,826
  4. Step 4: Simplify right side
    1,253,370x = 1,239,860,069,339.76
  5. Step 5: Solve for x
    x = 1,239,860,069,339.76/1,253,370
  6. Step 6: Final answer
    x = 989,221.12

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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.