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Finding the Fourth Proportional to 718,637.58, 991,679.22 and 446,698.50

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Solution

The fourth proportional to 718,637.58, 991,679.22 and 446,698.50 is: 616,418.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,637.58 : 991,679.22 = 446,698.50 : x
  2. Step 2: Convert to fraction form
    718,637.58/991,679.22 = 446,698.50/x
  3. Step 3: Cross multiply
    718,637.58x = 991,679.22 × 446,698.50
  4. Step 4: Simplify right side
    718,637.58x = 442,981,620,055.17
  5. Step 5: Solve for x
    x = 442,981,620,055.17/718,637.58
  6. Step 6: Final answer
    x = 616,418.67

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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.