Home / 1,393,299.80-2,087,981.40-859,234.40

Finding the Fourth Proportional to 1,393,299.80, 2,087,981.40 and 859,234.40

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Solution

The fourth proportional to 1,393,299.80, 2,087,981.40 and 859,234.40 is: 1,287,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,299.80 : 2,087,981.40 = 859,234.40 : x
  2. Step 2: Convert to fraction form
    1,393,299.80/2,087,981.40 = 859,234.40/x
  3. Step 3: Cross multiply
    1,393,299.80x = 2,087,981.40 × 859,234.40
  4. Step 4: Simplify right side
    1,393,299.80x = 1,794,065,445,440.16
  5. Step 5: Solve for x
    x = 1,794,065,445,440.16/1,393,299.80
  6. Step 6: Final answer
    x = 1,287,637.77

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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.