Home / 1,190,389.67-1,641,787.65-782,909.94

Finding the Fourth Proportional to 1,190,389.67, 1,641,787.65 and 782,909.94

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Solution

The fourth proportional to 1,190,389.67, 1,641,787.65 and 782,909.94 is: 1,079,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,389.67 : 1,641,787.65 = 782,909.94 : x
  2. Step 2: Convert to fraction form
    1,190,389.67/1,641,787.65 = 782,909.94/x
  3. Step 3: Cross multiply
    1,190,389.67x = 1,641,787.65 × 782,909.94
  4. Step 4: Simplify right side
    1,190,389.67x = 1,285,371,870,554.24
  5. Step 5: Solve for x
    x = 1,285,371,870,554.24/1,190,389.67
  6. Step 6: Final answer
    x = 1,079,790.85

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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.