Home / 1,889,231.20-2,834,721.60-991,686.40

Finding the Fourth Proportional to 1,889,231.20, 2,834,721.60 and 991,686.40

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Solution

The fourth proportional to 1,889,231.20, 2,834,721.60 and 991,686.40 is: 1,487,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889,231.20 : 2,834,721.60 = 991,686.40 : x
  2. Step 2: Convert to fraction form
    1,889,231.20/2,834,721.60 = 991,686.40/x
  3. Step 3: Cross multiply
    1,889,231.20x = 2,834,721.60 × 991,686.40
  4. Step 4: Simplify right side
    1,889,231.20x = 2,811,154,858,506.24
  5. Step 5: Solve for x
    x = 2,811,154,858,506.24/1,889,231.20
  6. Step 6: Final answer
    x = 1,487,988.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.