Home / 1,389,014.88-1,916,001.39-917,525.52

Finding the Fourth Proportional to 1,389,014.88, 1,916,001.39 and 917,525.52

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Solution

The fourth proportional to 1,389,014.88, 1,916,001.39 and 917,525.52 is: 1,265,630.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,014.88 : 1,916,001.39 = 917,525.52 : x
  2. Step 2: Convert to fraction form
    1,389,014.88/1,916,001.39 = 917,525.52/x
  3. Step 3: Cross multiply
    1,389,014.88x = 1,916,001.39 × 917,525.52
  4. Step 4: Simplify right side
    1,389,014.88x = 1,757,980,171,680.47
  5. Step 5: Solve for x
    x = 1,757,980,171,680.47/1,389,014.88
  6. Step 6: Final answer
    x = 1,265,630.91

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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.