Home / 861,646.41-1,188,891.88-499,048.56

Finding the Fourth Proportional to 861,646.41, 1,188,891.88 and 499,048.56

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Solution

The fourth proportional to 861,646.41, 1,188,891.88 and 499,048.56 is: 688,582.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,646.41 : 1,188,891.88 = 499,048.56 : x
  2. Step 2: Convert to fraction form
    861,646.41/1,188,891.88 = 499,048.56/x
  3. Step 3: Cross multiply
    861,646.41x = 1,188,891.88 × 499,048.56
  4. Step 4: Simplify right side
    861,646.41x = 593,314,779,462.07
  5. Step 5: Solve for x
    x = 593,314,779,462.07/861,646.41
  6. Step 6: Final answer
    x = 688,582.66

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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.