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Finding the Fourth Proportional to 627,299.64, 865,482.84 and 355,324.32

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Solution

The fourth proportional to 627,299.64, 865,482.84 and 355,324.32 is: 490,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,299.64 : 865,482.84 = 355,324.32 : x
  2. Step 2: Convert to fraction form
    627,299.64/865,482.84 = 355,324.32/x
  3. Step 3: Cross multiply
    627,299.64x = 865,482.84 × 355,324.32
  4. Step 4: Simplify right side
    627,299.64x = 307,527,101,594.67
  5. Step 5: Solve for x
    x = 307,527,101,594.67/627,299.64
  6. Step 6: Final answer
    x = 490,239.56

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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.