Home / 394,781.04-592,017.12-128,476.80

Finding the Fourth Proportional to 394,781.04, 592,017.12 and 128,476.80

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Solution

The fourth proportional to 394,781.04, 592,017.12 and 128,476.80 is: 192,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,781.04 : 592,017.12 = 128,476.80 : x
  2. Step 2: Convert to fraction form
    394,781.04/592,017.12 = 128,476.80/x
  3. Step 3: Cross multiply
    394,781.04x = 592,017.12 × 128,476.80
  4. Step 4: Simplify right side
    394,781.04x = 76,060,465,122.82
  5. Step 5: Solve for x
    x = 76,060,465,122.82/394,781.04
  6. Step 6: Final answer
    x = 192,664.94

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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.