Home / 765,916.03-1,056,922.72-421,684.93

Finding the Fourth Proportional to 765,916.03, 1,056,922.72 and 421,684.93

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Solution

The fourth proportional to 765,916.03, 1,056,922.72 and 421,684.93 is: 581,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,916.03 : 1,056,922.72 = 421,684.93 : x
  2. Step 2: Convert to fraction form
    765,916.03/1,056,922.72 = 421,684.93/x
  3. Step 3: Cross multiply
    765,916.03x = 1,056,922.72 × 421,684.93
  4. Step 4: Simplify right side
    765,916.03x = 445,688,383,198.61
  5. Step 5: Solve for x
    x = 445,688,383,198.61/765,916.03
  6. Step 6: Final answer
    x = 581,902.41

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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.