Home / 684,860.34-945,084.43-378,937.31

Finding the Fourth Proportional to 684,860.34, 945,084.43 and 378,937.31

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Solution

The fourth proportional to 684,860.34, 945,084.43 and 378,937.31 is: 522,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,860.34 : 945,084.43 = 378,937.31 : x
  2. Step 2: Convert to fraction form
    684,860.34/945,084.43 = 378,937.31/x
  3. Step 3: Cross multiply
    684,860.34x = 945,084.43 × 378,937.31
  4. Step 4: Simplify right side
    684,860.34x = 358,127,751,627.08
  5. Step 5: Solve for x
    x = 358,127,751,627.08/684,860.34
  6. Step 6: Final answer
    x = 522,920.85

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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.