Home / 1,421,472.26-1,961,980.27-809,985.47

Finding the Fourth Proportional to 1,421,472.26, 1,961,980.27 and 809,985.47

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Solution

The fourth proportional to 1,421,472.26, 1,961,980.27 and 809,985.47 is: 1,117,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,472.26 : 1,961,980.27 = 809,985.47 : x
  2. Step 2: Convert to fraction form
    1,421,472.26/1,961,980.27 = 809,985.47/x
  3. Step 3: Cross multiply
    1,421,472.26x = 1,961,980.27 × 809,985.47
  4. Step 4: Simplify right side
    1,421,472.26x = 1,589,175,506,221.73
  5. Step 5: Solve for x
    x = 1,589,175,506,221.73/1,421,472.26
  6. Step 6: Final answer
    x = 1,117,978.56

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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.