Home / 628,768.27-867,700.35-342,288.28

Finding the Fourth Proportional to 628,768.27, 867,700.35 and 342,288.28

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Solution

The fourth proportional to 628,768.27, 867,700.35 and 342,288.28 is: 472,357.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,768.27 : 867,700.35 = 342,288.28 : x
  2. Step 2: Convert to fraction form
    628,768.27/867,700.35 = 342,288.28/x
  3. Step 3: Cross multiply
    628,768.27x = 867,700.35 × 342,288.28
  4. Step 4: Simplify right side
    628,768.27x = 297,003,661,441.52
  5. Step 5: Solve for x
    x = 297,003,661,441.52/628,768.27
  6. Step 6: Final answer
    x = 472,357.90

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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.