Home / 1,421,020.55-1,961,022.11-776,440.71

Finding the Fourth Proportional to 1,421,020.55, 1,961,022.11 and 776,440.71

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Solution

The fourth proportional to 1,421,020.55, 1,961,022.11 and 776,440.71 is: 1,071,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,020.55 : 1,961,022.11 = 776,440.71 : x
  2. Step 2: Convert to fraction form
    1,421,020.55/1,961,022.11 = 776,440.71/x
  3. Step 3: Cross multiply
    1,421,020.55x = 1,961,022.11 × 776,440.71
  4. Step 4: Simplify right side
    1,421,020.55x = 1,522,617,399,414.10
  5. Step 5: Solve for x
    x = 1,522,617,399,414.10/1,421,020.55
  6. Step 6: Final answer
    x = 1,071,495.69

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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.