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Finding the Fourth Proportional to 628,550.25, 867,382.71 and 342,064.20

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Solution

The fourth proportional to 628,550.25, 867,382.71 and 342,064.20 is: 472,039.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,550.25 : 867,382.71 = 342,064.20 : x
  2. Step 2: Convert to fraction form
    628,550.25/867,382.71 = 342,064.20/x
  3. Step 3: Cross multiply
    628,550.25x = 867,382.71 × 342,064.20
  4. Step 4: Simplify right side
    628,550.25x = 296,700,572,789.98
  5. Step 5: Solve for x
    x = 296,700,572,789.98/628,550.25
  6. Step 6: Final answer
    x = 472,039.54

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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.