Home / 1,681,145.70-2,319,978.42-917,199.33

Finding the Fourth Proportional to 1,681,145.70, 2,319,978.42 and 917,199.33

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Solution

The fourth proportional to 1,681,145.70, 2,319,978.42 and 917,199.33 is: 1,265,733.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,145.70 : 2,319,978.42 = 917,199.33 : x
  2. Step 2: Convert to fraction form
    1,681,145.70/2,319,978.42 = 917,199.33/x
  3. Step 3: Cross multiply
    1,681,145.70x = 2,319,978.42 × 917,199.33
  4. Step 4: Simplify right side
    1,681,145.70x = 2,127,882,652,438.46
  5. Step 5: Solve for x
    x = 2,127,882,652,438.46/1,681,145.70
  6. Step 6: Final answer
    x = 1,265,733.63

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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.