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Finding the Fourth Proportional to 702,941.10, 1,051,954.05 and 643,958.70

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Solution

The fourth proportional to 702,941.10, 1,051,954.05 and 643,958.70 is: 963,686.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,941.10 : 1,051,954.05 = 643,958.70 : x
  2. Step 2: Convert to fraction form
    702,941.10/1,051,954.05 = 643,958.70/x
  3. Step 3: Cross multiply
    702,941.10x = 1,051,954.05 × 643,958.70
  4. Step 4: Simplify right side
    702,941.10x = 677,414,962,497.74
  5. Step 5: Solve for x
    x = 677,414,962,497.74/702,941.10
  6. Step 6: Final answer
    x = 963,686.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.