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Finding the Fourth Proportional to 691,792.82, 954,632.98 and 401,381.90

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Solution

The fourth proportional to 691,792.82, 954,632.98 and 401,381.90 is: 553,883.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,792.82 : 954,632.98 = 401,381.90 : x
  2. Step 2: Convert to fraction form
    691,792.82/954,632.98 = 401,381.90/x
  3. Step 3: Cross multiply
    691,792.82x = 954,632.98 × 401,381.90
  4. Step 4: Simplify right side
    691,792.82x = 383,172,399,315.06
  5. Step 5: Solve for x
    x = 383,172,399,315.06/691,792.82
  6. Step 6: Final answer
    x = 553,883.17

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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.