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Finding the Fourth Proportional to 636,653.80, 955,422.30 and 479,213.80

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Solution

The fourth proportional to 636,653.80, 955,422.30 and 479,213.80 is: 719,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,653.80 : 955,422.30 = 479,213.80 : x
  2. Step 2: Convert to fraction form
    636,653.80/955,422.30 = 479,213.80/x
  3. Step 3: Cross multiply
    636,653.80x = 955,422.30 × 479,213.80
  4. Step 4: Simplify right side
    636,653.80x = 457,851,550,987.74
  5. Step 5: Solve for x
    x = 457,851,550,987.74/636,653.80
  6. Step 6: Final answer
    x = 719,153.10

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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.