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Finding the Fourth Proportional to 1,010,808, 1,393,253.88 and 716,558

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Solution

The fourth proportional to 1,010,808, 1,393,253.88 and 716,558 is: 987,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,808 : 1,393,253.88 = 716,558 : x
  2. Step 2: Convert to fraction form
    1,010,808/1,393,253.88 = 716,558/x
  3. Step 3: Cross multiply
    1,010,808x = 1,393,253.88 × 716,558
  4. Step 4: Simplify right side
    1,010,808x = 998,347,213,745.04
  5. Step 5: Solve for x
    x = 998,347,213,745.04/1,010,808
  6. Step 6: Final answer
    x = 987,672.45

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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.