Home / 684,834.95-945,059.77-378,911.32

Finding the Fourth Proportional to 684,834.95, 945,059.77 and 378,911.32

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Solution

The fourth proportional to 684,834.95, 945,059.77 and 378,911.32 is: 522,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,834.95 : 945,059.77 = 378,911.32 : x
  2. Step 2: Convert to fraction form
    684,834.95/945,059.77 = 378,911.32/x
  3. Step 3: Cross multiply
    684,834.95x = 945,059.77 × 378,911.32
  4. Step 4: Simplify right side
    684,834.95x = 358,093,843,040.59
  5. Step 5: Solve for x
    x = 358,093,843,040.59/684,834.95
  6. Step 6: Final answer
    x = 522,890.72

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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.