Home / 1,420,964.68-1,960,872.96-776,407

Finding the Fourth Proportional to 1,420,964.68, 1,960,872.96 and 776,407

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Solution

The fourth proportional to 1,420,964.68, 1,960,872.96 and 776,407 is: 1,071,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,964.68 : 1,960,872.96 = 776,407 : x
  2. Step 2: Convert to fraction form
    1,420,964.68/1,960,872.96 = 776,407/x
  3. Step 3: Cross multiply
    1,420,964.68x = 1,960,872.96 × 776,407
  4. Step 4: Simplify right side
    1,420,964.68x = 1,522,435,492,254.72
  5. Step 5: Solve for x
    x = 1,522,435,492,254.72/1,420,964.68
  6. Step 6: Final answer
    x = 1,071,409.81

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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.