Home / 684,317.40-944,319.78-378,376.08

Finding the Fourth Proportional to 684,317.40, 944,319.78 and 378,376.08

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Solution

The fourth proportional to 684,317.40, 944,319.78 and 378,376.08 is: 522,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,317.40 : 944,319.78 = 378,376.08 : x
  2. Step 2: Convert to fraction form
    684,317.40/944,319.78 = 378,376.08/x
  3. Step 3: Cross multiply
    684,317.40x = 944,319.78 × 378,376.08
  4. Step 4: Simplify right side
    684,317.40x = 357,308,016,622.86
  5. Step 5: Solve for x
    x = 357,308,016,622.86/684,317.40
  6. Step 6: Final answer
    x = 522,137.85

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1.5x scale

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.