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Finding the Fourth Proportional to 1,253,364, 1,729,644.48 and 716,820

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Solution

The fourth proportional to 1,253,364, 1,729,644.48 and 716,820 is: 989,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,364 : 1,729,644.48 = 716,820 : x
  2. Step 2: Convert to fraction form
    1,253,364/1,729,644.48 = 716,820/x
  3. Step 3: Cross multiply
    1,253,364x = 1,729,644.48 × 716,820
  4. Step 4: Simplify right side
    1,253,364x = 1,239,843,756,153.60
  5. Step 5: Solve for x
    x = 1,239,843,756,153.60/1,253,364
  6. Step 6: Final answer
    x = 989,212.84

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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.