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Finding the Fourth Proportional to 636,334.81, 878,119.61 and 349,852.70

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Solution

The fourth proportional to 636,334.81, 878,119.61 and 349,852.70 is: 482,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,334.81 : 878,119.61 = 349,852.70 : x
  2. Step 2: Convert to fraction form
    636,334.81/878,119.61 = 349,852.70/x
  3. Step 3: Cross multiply
    636,334.81x = 878,119.61 × 349,852.70
  4. Step 4: Simplify right side
    636,334.81x = 307,212,516,927.48
  5. Step 5: Solve for x
    x = 307,212,516,927.48/636,334.81
  6. Step 6: Final answer
    x = 482,784.40

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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.