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Finding the Fourth Proportional to 503,960.32, 695,414.76 and 310,336.98

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Solution

The fourth proportional to 503,960.32, 695,414.76 and 310,336.98 is: 428,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,960.32 : 695,414.76 = 310,336.98 : x
  2. Step 2: Convert to fraction form
    503,960.32/695,414.76 = 310,336.98/x
  3. Step 3: Cross multiply
    503,960.32x = 695,414.76 × 310,336.98
  4. Step 4: Simplify right side
    503,960.32x = 215,812,916,465.83
  5. Step 5: Solve for x
    x = 215,812,916,465.83/503,960.32
  6. Step 6: Final answer
    x = 428,233.95

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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.