Home / 2,139,108.96-3,208,505.28-790,642.08

Finding the Fourth Proportional to 2,139,108.96, 3,208,505.28 and 790,642.08

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Solution

The fourth proportional to 2,139,108.96, 3,208,505.28 and 790,642.08 is: 1,185,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,108.96 : 3,208,505.28 = 790,642.08 : x
  2. Step 2: Convert to fraction form
    2,139,108.96/3,208,505.28 = 790,642.08/x
  3. Step 3: Cross multiply
    2,139,108.96x = 3,208,505.28 × 790,642.08
  4. Step 4: Simplify right side
    2,139,108.96x = 2,536,779,288,270.18
  5. Step 5: Solve for x
    x = 2,536,779,288,270.18/2,139,108.96
  6. Step 6: Final answer
    x = 1,185,904.66

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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.