Home / 1,388,694.24-1,916,307.52-776,740.96

Finding the Fourth Proportional to 1,388,694.24, 1,916,307.52 and 776,740.96

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Solution

The fourth proportional to 1,388,694.24, 1,916,307.52 and 776,740.96 is: 1,071,851.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,694.24 : 1,916,307.52 = 776,740.96 : x
  2. Step 2: Convert to fraction form
    1,388,694.24/1,916,307.52 = 776,740.96/x
  3. Step 3: Cross multiply
    1,388,694.24x = 1,916,307.52 × 776,740.96
  4. Step 4: Simplify right side
    1,388,694.24x = 1,488,474,542,740.02
  5. Step 5: Solve for x
    x = 1,488,474,542,740.02/1,388,694.24
  6. Step 6: Final answer
    x = 1,071,851.89

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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.