Home / 680,941.20-1,021,411.80-629,765.40

Finding the Fourth Proportional to 680,941.20, 1,021,411.80 and 629,765.40

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Solution

The fourth proportional to 680,941.20, 1,021,411.80 and 629,765.40 is: 944,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,941.20 : 1,021,411.80 = 629,765.40 : x
  2. Step 2: Convert to fraction form
    680,941.20/1,021,411.80 = 629,765.40/x
  3. Step 3: Cross multiply
    680,941.20x = 1,021,411.80 × 629,765.40
  4. Step 4: Simplify right side
    680,941.20x = 643,249,810,791.72
  5. Step 5: Solve for x
    x = 643,249,810,791.72/680,941.20
  6. Step 6: Final answer
    x = 944,648.10

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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.