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Finding the Fourth Proportional to 636,738.88, 878,681.01 and 350,258.80

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Solution

The fourth proportional to 636,738.88, 878,681.01 and 350,258.80 is: 483,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,738.88 : 878,681.01 = 350,258.80 : x
  2. Step 2: Convert to fraction form
    636,738.88/878,681.01 = 350,258.80/x
  3. Step 3: Cross multiply
    636,738.88x = 878,681.01 × 350,258.80
  4. Step 4: Simplify right side
    636,738.88x = 307,765,756,145.39
  5. Step 5: Solve for x
    x = 307,765,756,145.39/636,738.88
  6. Step 6: Final answer
    x = 483,346.89

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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.