Home / 1,605,435.20-2,215,415.46-916,971.86

Finding the Fourth Proportional to 1,605,435.20, 2,215,415.46 and 916,971.86

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Solution

The fourth proportional to 1,605,435.20, 2,215,415.46 and 916,971.86 is: 1,265,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,435.20 : 2,215,415.46 = 916,971.86 : x
  2. Step 2: Convert to fraction form
    1,605,435.20/2,215,415.46 = 916,971.86/x
  3. Step 3: Cross multiply
    1,605,435.20x = 2,215,415.46 × 916,971.86
  4. Step 4: Simplify right side
    1,605,435.20x = 2,031,473,635,028.96
  5. Step 5: Solve for x
    x = 2,031,473,635,028.96/1,605,435.20
  6. Step 6: Final answer
    x = 1,265,372.55

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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.