Home / 1,819,400.70-2,729,101.05-621,143.40

Finding the Fourth Proportional to 1,819,400.70, 2,729,101.05 and 621,143.40

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Solution

The fourth proportional to 1,819,400.70, 2,729,101.05 and 621,143.40 is: 931,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819,400.70 : 2,729,101.05 = 621,143.40 : x
  2. Step 2: Convert to fraction form
    1,819,400.70/2,729,101.05 = 621,143.40/x
  3. Step 3: Cross multiply
    1,819,400.70x = 2,729,101.05 × 621,143.40
  4. Step 4: Simplify right side
    1,819,400.70x = 1,695,163,105,140.57
  5. Step 5: Solve for x
    x = 1,695,163,105,140.57/1,819,400.70
  6. Step 6: Final answer
    x = 931,715.10

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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.