Home / 1,420,996.31-1,960,971.89-776,421.12

Finding the Fourth Proportional to 1,420,996.31, 1,960,971.89 and 776,421.12

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Solution

The fourth proportional to 1,420,996.31, 1,960,971.89 and 776,421.12 is: 1,071,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,996.31 : 1,960,971.89 = 776,421.12 : x
  2. Step 2: Convert to fraction form
    1,420,996.31/1,960,971.89 = 776,421.12/x
  3. Step 3: Cross multiply
    1,420,996.31x = 1,960,971.89 × 776,421.12
  4. Step 4: Simplify right side
    1,420,996.31x = 1,522,539,987,240.21
  5. Step 5: Solve for x
    x = 1,522,539,987,240.21/1,420,996.31
  6. Step 6: Final answer
    x = 1,071,459.50

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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.