Home / 1,790,123.20-2,685,184.80-1,721,310.40

Finding the Fourth Proportional to 1,790,123.20, 2,685,184.80 and 1,721,310.40

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Solution

The fourth proportional to 1,790,123.20, 2,685,184.80 and 1,721,310.40 is: 2,581,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790,123.20 : 2,685,184.80 = 1,721,310.40 : x
  2. Step 2: Convert to fraction form
    1,790,123.20/2,685,184.80 = 1,721,310.40/x
  3. Step 3: Cross multiply
    1,790,123.20x = 2,685,184.80 × 1,721,310.40
  4. Step 4: Simplify right side
    1,790,123.20x = 4,622,036,522,161.92
  5. Step 5: Solve for x
    x = 4,622,036,522,161.92/1,790,123.20
  6. Step 6: Final answer
    x = 2,581,965.60

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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.