Home / 991,915.87-1,366,414.28-719,182.39

Finding the Fourth Proportional to 991,915.87, 1,366,414.28 and 719,182.39

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Solution

The fourth proportional to 991,915.87, 1,366,414.28 and 719,182.39 is: 990,710.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,915.87 : 1,366,414.28 = 719,182.39 : x
  2. Step 2: Convert to fraction form
    991,915.87/1,366,414.28 = 719,182.39/x
  3. Step 3: Cross multiply
    991,915.87x = 1,366,414.28 × 719,182.39
  4. Step 4: Simplify right side
    991,915.87x = 982,701,082,586.41
  5. Step 5: Solve for x
    x = 982,701,082,586.41/991,915.87
  6. Step 6: Final answer
    x = 990,710.12

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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.