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Finding the Fourth Proportional to 636,658.80, 955,429.80 and 479,218.80

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Solution

The fourth proportional to 636,658.80, 955,429.80 and 479,218.80 is: 719,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,658.80 : 955,429.80 = 479,218.80 : x
  2. Step 2: Convert to fraction form
    636,658.80/955,429.80 = 479,218.80/x
  3. Step 3: Cross multiply
    636,658.80x = 955,429.80 × 479,218.80
  4. Step 4: Simplify right side
    636,658.80x = 457,859,922,240.24
  5. Step 5: Solve for x
    x = 457,859,922,240.24/636,658.80
  6. Step 6: Final answer
    x = 719,160.60

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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.