Home / 1,420,978.34-1,960,892.40-776,420.84

Finding the Fourth Proportional to 1,420,978.34, 1,960,892.40 and 776,420.84

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Solution

The fourth proportional to 1,420,978.34, 1,960,892.40 and 776,420.84 is: 1,071,429.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,978.34 : 1,960,892.40 = 776,420.84 : x
  2. Step 2: Convert to fraction form
    1,420,978.34/1,960,892.40 = 776,420.84/x
  3. Step 3: Cross multiply
    1,420,978.34x = 1,960,892.40 × 776,420.84
  4. Step 4: Simplify right side
    1,420,978.34x = 1,522,477,724,357.62
  5. Step 5: Solve for x
    x = 1,522,477,724,357.62/1,420,978.34
  6. Step 6: Final answer
    x = 1,071,429.23

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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.