Home / 1,421,019.55-1,961,020.73-776,439.71

Finding the Fourth Proportional to 1,421,019.55, 1,961,020.73 and 776,439.71

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Solution

The fourth proportional to 1,421,019.55, 1,961,020.73 and 776,439.71 is: 1,071,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,019.55 : 1,961,020.73 = 776,439.71 : x
  2. Step 2: Convert to fraction form
    1,421,019.55/1,961,020.73 = 776,439.71/x
  3. Step 3: Cross multiply
    1,421,019.55x = 1,961,020.73 × 776,439.71
  4. Step 4: Simplify right side
    1,421,019.55x = 1,522,614,366,395.01
  5. Step 5: Solve for x
    x = 1,522,614,366,395.01/1,421,019.55
  6. Step 6: Final answer
    x = 1,071,494.31

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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.