Home / 1,291,464.52-1,781,478.90-807,189.21

Finding the Fourth Proportional to 1,291,464.52, 1,781,478.90 and 807,189.21

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Solution

The fourth proportional to 1,291,464.52, 1,781,478.90 and 807,189.21 is: 1,113,457.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,464.52 : 1,781,478.90 = 807,189.21 : x
  2. Step 2: Convert to fraction form
    1,291,464.52/1,781,478.90 = 807,189.21/x
  3. Step 3: Cross multiply
    1,291,464.52x = 1,781,478.90 × 807,189.21
  4. Step 4: Simplify right side
    1,291,464.52x = 1,437,990,545,922.67
  5. Step 5: Solve for x
    x = 1,437,990,545,922.67/1,291,464.52
  6. Step 6: Final answer
    x = 1,113,457.26

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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.