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Finding the Fourth Proportional to 668,780.55, 922,917.11 and 382,307.04

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Solution

The fourth proportional to 668,780.55, 922,917.11 and 382,307.04 is: 527,583.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,780.55 : 922,917.11 = 382,307.04 : x
  2. Step 2: Convert to fraction form
    668,780.55/922,917.11 = 382,307.04/x
  3. Step 3: Cross multiply
    668,780.55x = 922,917.11 × 382,307.04
  4. Step 4: Simplify right side
    668,780.55x = 352,837,706,577.92
  5. Step 5: Solve for x
    x = 352,837,706,577.92/668,780.55
  6. Step 6: Final answer
    x = 527,583.68

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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.