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Finding the Fourth Proportional to 627,523.95, 865,949.79 and 355,595.07

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Solution

The fourth proportional to 627,523.95, 865,949.79 and 355,595.07 is: 490,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,523.95 : 865,949.79 = 355,595.07 : x
  2. Step 2: Convert to fraction form
    627,523.95/865,949.79 = 355,595.07/x
  3. Step 3: Cross multiply
    627,523.95x = 865,949.79 × 355,595.07
  4. Step 4: Simplify right side
    627,523.95x = 307,927,476,191.54
  5. Step 5: Solve for x
    x = 307,927,476,191.54/627,523.95
  6. Step 6: Final answer
    x = 490,702.35

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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.