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Finding the Fourth Proportional to 627,607.12, 866,069.13 and 355,659.07

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Solution

The fourth proportional to 627,607.12, 866,069.13 and 355,659.07 is: 490,793.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,607.12 : 866,069.13 = 355,659.07 : x
  2. Step 2: Convert to fraction form
    627,607.12/866,069.13 = 355,659.07/x
  3. Step 3: Cross multiply
    627,607.12x = 866,069.13 × 355,659.07
  4. Step 4: Simplify right side
    627,607.12x = 308,025,341,331.51
  5. Step 5: Solve for x
    x = 308,025,341,331.51/627,607.12
  6. Step 6: Final answer
    x = 490,793.26

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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.