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Finding the Fourth Proportional to 394,698.80, 592,048.20 and 315,966.80

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Solution

The fourth proportional to 394,698.80, 592,048.20 and 315,966.80 is: 473,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,698.80 : 592,048.20 = 315,966.80 : x
  2. Step 2: Convert to fraction form
    394,698.80/592,048.20 = 315,966.80/x
  3. Step 3: Cross multiply
    394,698.80x = 592,048.20 × 315,966.80
  4. Step 4: Simplify right side
    394,698.80x = 187,067,575,199.76
  5. Step 5: Solve for x
    x = 187,067,575,199.76/394,698.80
  6. Step 6: Final answer
    x = 473,950.20

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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.