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Finding the Fourth Proportional to 386,317.80, 579,476.70 and 366,634.80

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Solution

The fourth proportional to 386,317.80, 579,476.70 and 366,634.80 is: 549,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,317.80 : 579,476.70 = 366,634.80 : x
  2. Step 2: Convert to fraction form
    386,317.80/579,476.70 = 366,634.80/x
  3. Step 3: Cross multiply
    386,317.80x = 579,476.70 × 366,634.80
  4. Step 4: Simplify right side
    386,317.80x = 212,456,324,009.16
  5. Step 5: Solve for x
    x = 212,456,324,009.16/386,317.80
  6. Step 6: Final answer
    x = 549,952.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.