Home / 627,315.46-865,667.10-355,377.80

Finding the Fourth Proportional to 627,315.46, 865,667.10 and 355,377.80

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Solution

The fourth proportional to 627,315.46, 865,667.10 and 355,377.80 is: 490,405.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,315.46 : 865,667.10 = 355,377.80 : x
  2. Step 2: Convert to fraction form
    627,315.46/865,667.10 = 355,377.80/x
  3. Step 3: Cross multiply
    627,315.46x = 865,667.10 × 355,377.80
  4. Step 4: Simplify right side
    627,315.46x = 307,638,869,530.38
  5. Step 5: Solve for x
    x = 307,638,869,530.38/627,315.46
  6. Step 6: Final answer
    x = 490,405.37

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1.5x scale

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.