Home / 1,380,488.12-1,904,779.68-807,416.36

Finding the Fourth Proportional to 1,380,488.12, 1,904,779.68 and 807,416.36

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Solution

The fourth proportional to 1,380,488.12, 1,904,779.68 and 807,416.36 is: 1,114,062.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,488.12 : 1,904,779.68 = 807,416.36 : x
  2. Step 2: Convert to fraction form
    1,380,488.12/1,904,779.68 = 807,416.36/x
  3. Step 3: Cross multiply
    1,380,488.12x = 1,904,779.68 × 807,416.36
  4. Step 4: Simplify right side
    1,380,488.12x = 1,537,950,275,827.56
  5. Step 5: Solve for x
    x = 1,537,950,275,827.56/1,380,488.12
  6. Step 6: Final answer
    x = 1,114,062.67

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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.