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Finding the Fourth Proportional to 627,603.62, 866,064.30 and 355,655.57

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Solution

The fourth proportional to 627,603.62, 866,064.30 and 355,655.57 is: 490,788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,603.62 : 866,064.30 = 355,655.57 : x
  2. Step 2: Convert to fraction form
    627,603.62/866,064.30 = 355,655.57/x
  3. Step 3: Cross multiply
    627,603.62x = 866,064.30 × 355,655.57
  4. Step 4: Simplify right side
    627,603.62x = 308,020,592,273.15
  5. Step 5: Solve for x
    x = 308,020,592,273.15/627,603.62
  6. Step 6: Final answer
    x = 490,788.43

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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.