Home / 684,725.80-1,025,120.40-419,005.30

Finding the Fourth Proportional to 684,725.80, 1,025,120.40 and 419,005.30

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Solution

The fourth proportional to 684,725.80, 1,025,120.40 and 419,005.30 is: 627,303.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,725.80 : 1,025,120.40 = 419,005.30 : x
  2. Step 2: Convert to fraction form
    684,725.80/1,025,120.40 = 419,005.30/x
  3. Step 3: Cross multiply
    684,725.80x = 1,025,120.40 × 419,005.30
  4. Step 4: Simplify right side
    684,725.80x = 429,530,880,738.12
  5. Step 5: Solve for x
    x = 429,530,880,738.12/684,725.80
  6. Step 6: Final answer
    x = 627,303.49

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1.5x scale

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.