Home / 1,118,369.88-1,543,394.12-634,980

Finding the Fourth Proportional to 1,118,369.88, 1,543,394.12 and 634,980

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Solution

The fourth proportional to 1,118,369.88, 1,543,394.12 and 634,980 is: 876,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,369.88 : 1,543,394.12 = 634,980 : x
  2. Step 2: Convert to fraction form
    1,118,369.88/1,543,394.12 = 634,980/x
  3. Step 3: Cross multiply
    1,118,369.88x = 1,543,394.12 × 634,980
  4. Step 4: Simplify right side
    1,118,369.88x = 980,024,399,905.05
  5. Step 5: Solve for x
    x = 980,024,399,905.05/1,118,369.88
  6. Step 6: Final answer
    x = 876,297.20

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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.