Home / 920,555.69-1,270,863.88-645,755.49

Finding the Fourth Proportional to 920,555.69, 1,270,863.88 and 645,755.49

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Solution

The fourth proportional to 920,555.69, 1,270,863.88 and 645,755.49 is: 891,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,555.69 : 1,270,863.88 = 645,755.49 : x
  2. Step 2: Convert to fraction form
    920,555.69/1,270,863.88 = 645,755.49/x
  3. Step 3: Cross multiply
    920,555.69x = 1,270,863.88 × 645,755.49
  4. Step 4: Simplify right side
    920,555.69x = 820,667,325,938.31
  5. Step 5: Solve for x
    x = 820,667,325,938.31/920,555.69
  6. Step 6: Final answer
    x = 891,491.24

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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.