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Finding the Fourth Proportional to 636,073.34, 877,783.12 and 349,622.78

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Solution

The fourth proportional to 636,073.34, 877,783.12 and 349,622.78 is: 482,480.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,073.34 : 877,783.12 = 349,622.78 : x
  2. Step 2: Convert to fraction form
    636,073.34/877,783.12 = 349,622.78/x
  3. Step 3: Cross multiply
    636,073.34x = 877,783.12 × 349,622.78
  4. Step 4: Simplify right side
    636,073.34x = 306,892,972,903.36
  5. Step 5: Solve for x
    x = 306,892,972,903.36/636,073.34
  6. Step 6: Final answer
    x = 482,480.48

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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.