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Finding the Fourth Proportional to 637,398.16, 879,620.73 and 347,018.17

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Solution

The fourth proportional to 637,398.16, 879,620.73 and 347,018.17 is: 478,891.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,398.16 : 879,620.73 = 347,018.17 : x
  2. Step 2: Convert to fraction form
    637,398.16/879,620.73 = 347,018.17/x
  3. Step 3: Cross multiply
    637,398.16x = 879,620.73 × 347,018.17
  4. Step 4: Simplify right side
    637,398.16x = 305,244,376,018.66
  5. Step 5: Solve for x
    x = 305,244,376,018.66/637,398.16
  6. Step 6: Final answer
    x = 478,891.21

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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.