Home / 855,013.80-1,281,872.70-434,591.40

Finding the Fourth Proportional to 855,013.80, 1,281,872.70 and 434,591.40

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Solution

The fourth proportional to 855,013.80, 1,281,872.70 and 434,591.40 is: 651,557.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,013.80 : 1,281,872.70 = 434,591.40 : x
  2. Step 2: Convert to fraction form
    855,013.80/1,281,872.70 = 434,591.40/x
  3. Step 3: Cross multiply
    855,013.80x = 1,281,872.70 × 434,591.40
  4. Step 4: Simplify right side
    855,013.80x = 557,090,851,314.78
  5. Step 5: Solve for x
    x = 557,090,851,314.78/855,013.80
  6. Step 6: Final answer
    x = 651,557.73

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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.