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Finding the Fourth Proportional to 628,844.19, 867,803.67 and 342,361.77

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Solution

The fourth proportional to 628,844.19, 867,803.67 and 342,361.77 is: 472,458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,844.19 : 867,803.67 = 342,361.77 : x
  2. Step 2: Convert to fraction form
    628,844.19/867,803.67 = 342,361.77/x
  3. Step 3: Cross multiply
    628,844.19x = 867,803.67 × 342,361.77
  4. Step 4: Simplify right side
    628,844.19x = 297,102,800,473.70
  5. Step 5: Solve for x
    x = 297,102,800,473.70/628,844.19
  6. Step 6: Final answer
    x = 472,458.53

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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.