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Finding the Fourth Proportional to 667,792.17, 922,775.30 and 486,188.90

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Solution

The fourth proportional to 667,792.17, 922,775.30 and 486,188.90 is: 671,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,792.17 : 922,775.30 = 486,188.90 : x
  2. Step 2: Convert to fraction form
    667,792.17/922,775.30 = 486,188.90/x
  3. Step 3: Cross multiply
    667,792.17x = 922,775.30 × 486,188.90
  4. Step 4: Simplify right side
    667,792.17x = 448,643,101,009.35
  5. Step 5: Solve for x
    x = 448,643,101,009.35/667,792.17
  6. Step 6: Final answer
    x = 671,830.43

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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.