Home / 684,849.32-945,119.95-378,920.75

Finding the Fourth Proportional to 684,849.32, 945,119.95 and 378,920.75

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Solution

The fourth proportional to 684,849.32, 945,119.95 and 378,920.75 is: 522,926.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,849.32 : 945,119.95 = 378,920.75 : x
  2. Step 2: Convert to fraction form
    684,849.32/945,119.95 = 378,920.75/x
  3. Step 3: Cross multiply
    684,849.32x = 945,119.95 × 378,920.75
  4. Step 4: Simplify right side
    684,849.32x = 358,125,554,974.25
  5. Step 5: Solve for x
    x = 358,125,554,974.25/684,849.32
  6. Step 6: Final answer
    x = 522,926.06

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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.