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Finding the Fourth Proportional to 636,225.40, 877,968.84 and 349,743.43

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Solution

The fourth proportional to 636,225.40, 877,968.84 and 349,743.43 is: 482,633.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,225.40 : 877,968.84 = 349,743.43 : x
  2. Step 2: Convert to fraction form
    636,225.40/877,968.84 = 349,743.43/x
  3. Step 3: Cross multiply
    636,225.40x = 877,968.84 × 349,743.43
  4. Step 4: Simplify right side
    636,225.40x = 307,063,833,534.72
  5. Step 5: Solve for x
    x = 307,063,833,534.72/636,225.40
  6. Step 6: Final answer
    x = 482,633.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.