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Finding the Fourth Proportional to 392,895.70, 585,904.94 and 389,304.16

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Solution

The fourth proportional to 392,895.70, 585,904.94 and 389,304.16 is: 580,549.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,895.70 : 585,904.94 = 389,304.16 : x
  2. Step 2: Convert to fraction form
    392,895.70/585,904.94 = 389,304.16/x
  3. Step 3: Cross multiply
    392,895.70x = 585,904.94 × 389,304.16
  4. Step 4: Simplify right side
    392,895.70x = 228,095,227,460.24
  5. Step 5: Solve for x
    x = 228,095,227,460.24/392,895.70
  6. Step 6: Final answer
    x = 580,549.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.