Home / 1,420,896.80-1,960,814.64-776,303.12

Finding the Fourth Proportional to 1,420,896.80, 1,960,814.64 and 776,303.12

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Solution

The fourth proportional to 1,420,896.80, 1,960,814.64 and 776,303.12 is: 1,071,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,896.80 : 1,960,814.64 = 776,303.12 : x
  2. Step 2: Convert to fraction form
    1,420,896.80/1,960,814.64 = 776,303.12/x
  3. Step 3: Cross multiply
    1,420,896.80x = 1,960,814.64 × 776,303.12
  4. Step 4: Simplify right side
    1,420,896.80x = 1,522,186,522,773.68
  5. Step 5: Solve for x
    x = 1,522,186,522,773.68/1,420,896.80
  6. Step 6: Final answer
    x = 1,071,285.77

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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.