Home / 1,388,161.56-1,915,649.46-776,307.36

Finding the Fourth Proportional to 1,388,161.56, 1,915,649.46 and 776,307.36

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Solution

The fourth proportional to 1,388,161.56, 1,915,649.46 and 776,307.36 is: 1,071,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,161.56 : 1,915,649.46 = 776,307.36 : x
  2. Step 2: Convert to fraction form
    1,388,161.56/1,915,649.46 = 776,307.36/x
  3. Step 3: Cross multiply
    1,388,161.56x = 1,915,649.46 × 776,307.36
  4. Step 4: Simplify right side
    1,388,161.56x = 1,487,132,774,978.03
  5. Step 5: Solve for x
    x = 1,487,132,774,978.03/1,388,161.56
  6. Step 6: Final answer
    x = 1,071,296.61

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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.