Home / 1,388,293.63-1,915,765.28-768,061.51

Finding the Fourth Proportional to 1,388,293.63, 1,915,765.28 and 768,061.51

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Solution

The fourth proportional to 1,388,293.63, 1,915,765.28 and 768,061.51 is: 1,059,880.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,293.63 : 1,915,765.28 = 768,061.51 : x
  2. Step 2: Convert to fraction form
    1,388,293.63/1,915,765.28 = 768,061.51/x
  3. Step 3: Cross multiply
    1,388,293.63x = 1,915,765.28 × 768,061.51
  4. Step 4: Simplify right side
    1,388,293.63x = 1,471,425,573,762.37
  5. Step 5: Solve for x
    x = 1,471,425,573,762.37/1,388,293.63
  6. Step 6: Final answer
    x = 1,059,880.66

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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.