Home / 718,107.56-1,077,012.09-212,549.91

Finding the Fourth Proportional to 718,107.56, 1,077,012.09 and 212,549.91

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Solution

The fourth proportional to 718,107.56, 1,077,012.09 and 212,549.91 is: 318,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,107.56 : 1,077,012.09 = 212,549.91 : x
  2. Step 2: Convert to fraction form
    718,107.56/1,077,012.09 = 212,549.91/x
  3. Step 3: Cross multiply
    718,107.56x = 1,077,012.09 × 212,549.91
  4. Step 4: Simplify right side
    718,107.56x = 228,918,822,798.41
  5. Step 5: Solve for x
    x = 228,918,822,798.41/718,107.56
  6. Step 6: Final answer
    x = 318,780.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.