Home / 1,186,538.82-1,779,793.38-287,988

Finding the Fourth Proportional to 1,186,538.82, 1,779,793.38 and 287,988

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Solution

The fourth proportional to 1,186,538.82, 1,779,793.38 and 287,988 is: 431,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,538.82 : 1,779,793.38 = 287,988 : x
  2. Step 2: Convert to fraction form
    1,186,538.82/1,779,793.38 = 287,988/x
  3. Step 3: Cross multiply
    1,186,538.82x = 1,779,793.38 × 287,988
  4. Step 4: Simplify right side
    1,186,538.82x = 512,559,135,919.44
  5. Step 5: Solve for x
    x = 512,559,135,919.44/1,186,538.82
  6. Step 6: Final answer
    x = 431,978.40

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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.