Home / 1,317,705.61-1,976,544.69-678,188.52

Finding the Fourth Proportional to 1,317,705.61, 1,976,544.69 and 678,188.52

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Solution

The fourth proportional to 1,317,705.61, 1,976,544.69 and 678,188.52 is: 1,017,275.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,705.61 : 1,976,544.69 = 678,188.52 : x
  2. Step 2: Convert to fraction form
    1,317,705.61/1,976,544.69 = 678,188.52/x
  3. Step 3: Cross multiply
    1,317,705.61x = 1,976,544.69 × 678,188.52
  4. Step 4: Simplify right side
    1,317,705.61x = 1,340,469,918,024.96
  5. Step 5: Solve for x
    x = 1,340,469,918,024.96/1,317,705.61
  6. Step 6: Final answer
    x = 1,017,275.72

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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.