Home / 1,388,103.35-1,915,503.14-767,871.51

Finding the Fourth Proportional to 1,388,103.35, 1,915,503.14 and 767,871.51

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Solution

The fourth proportional to 1,388,103.35, 1,915,503.14 and 767,871.51 is: 1,059,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,103.35 : 1,915,503.14 = 767,871.51 : x
  2. Step 2: Convert to fraction form
    1,388,103.35/1,915,503.14 = 767,871.51/x
  3. Step 3: Cross multiply
    1,388,103.35x = 1,915,503.14 × 767,871.51
  4. Step 4: Simplify right side
    1,388,103.35x = 1,470,860,289,713.51
  5. Step 5: Solve for x
    x = 1,470,860,289,713.51/1,388,103.35
  6. Step 6: Final answer
    x = 1,059,618.72

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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.