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Finding the Fourth Proportional to 628,561, 867,414.18 and 360,444.52

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Solution

The fourth proportional to 628,561, 867,414.18 and 360,444.52 is: 497,413.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,561 : 867,414.18 = 360,444.52 : x
  2. Step 2: Convert to fraction form
    628,561/867,414.18 = 360,444.52/x
  3. Step 3: Cross multiply
    628,561x = 867,414.18 × 360,444.52
  4. Step 4: Simplify right side
    628,561x = 312,654,687,751.29
  5. Step 5: Solve for x
    x = 312,654,687,751.29/628,561
  6. Step 6: Final answer
    x = 497,413.44

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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.