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Finding the Fourth Proportional to 637,648.28, 879,948.79 and 351,162.21

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Solution

The fourth proportional to 637,648.28, 879,948.79 and 351,162.21 is: 484,600.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,648.28 : 879,948.79 = 351,162.21 : x
  2. Step 2: Convert to fraction form
    637,648.28/879,948.79 = 351,162.21/x
  3. Step 3: Cross multiply
    637,648.28x = 879,948.79 × 351,162.21
  4. Step 4: Simplify right side
    637,648.28x = 309,004,760,905.32
  5. Step 5: Solve for x
    x = 309,004,760,905.32/637,648.28
  6. Step 6: Final answer
    x = 484,600.64

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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.