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Finding the Fourth Proportional to 482,882.86, 666,378.77 and 289,402.95

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Solution

The fourth proportional to 482,882.86, 666,378.77 and 289,402.95 is: 399,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,882.86 : 666,378.77 = 289,402.95 : x
  2. Step 2: Convert to fraction form
    482,882.86/666,378.77 = 289,402.95/x
  3. Step 3: Cross multiply
    482,882.86x = 666,378.77 × 289,402.95
  4. Step 4: Simplify right side
    482,882.86x = 192,851,979,158.90
  5. Step 5: Solve for x
    x = 192,851,979,158.90/482,882.86
  6. Step 6: Final answer
    x = 399,376.32

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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.