Home / 1,118,378.11-1,543,405.50-634,988.23

Finding the Fourth Proportional to 1,118,378.11, 1,543,405.50 and 634,988.23

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Solution

The fourth proportional to 1,118,378.11, 1,543,405.50 and 634,988.23 is: 876,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,378.11 : 1,543,405.50 = 634,988.23 : x
  2. Step 2: Convert to fraction form
    1,118,378.11/1,543,405.50 = 634,988.23/x
  3. Step 3: Cross multiply
    1,118,378.11x = 1,543,405.50 × 634,988.23
  4. Step 4: Simplify right side
    1,118,378.11x = 980,044,326,617.27
  5. Step 5: Solve for x
    x = 980,044,326,617.27/1,118,378.11
  6. Step 6: Final answer
    x = 876,308.57

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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.