Home / 1,388,367.75-1,915,951.98-776,531.01

Finding the Fourth Proportional to 1,388,367.75, 1,915,951.98 and 776,531.01

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Solution

The fourth proportional to 1,388,367.75, 1,915,951.98 and 776,531.01 is: 1,071,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,367.75 : 1,915,951.98 = 776,531.01 : x
  2. Step 2: Convert to fraction form
    1,388,367.75/1,915,951.98 = 776,531.01/x
  3. Step 3: Cross multiply
    1,388,367.75x = 1,915,951.98 × 776,531.01
  4. Step 4: Simplify right side
    1,388,367.75x = 1,487,796,126,140.90
  5. Step 5: Solve for x
    x = 1,487,796,126,140.90/1,388,367.75
  6. Step 6: Final answer
    x = 1,071,615.30

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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.