Home / 1,615,114.86-2,228,840.39-917,390.78

Finding the Fourth Proportional to 1,615,114.86, 2,228,840.39 and 917,390.78

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Solution

The fourth proportional to 1,615,114.86, 2,228,840.39 and 917,390.78 is: 1,265,988.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615,114.86 : 2,228,840.39 = 917,390.78 : x
  2. Step 2: Convert to fraction form
    1,615,114.86/2,228,840.39 = 917,390.78/x
  3. Step 3: Cross multiply
    1,615,114.86x = 2,228,840.39 × 917,390.78
  4. Step 4: Simplify right side
    1,615,114.86x = 2,044,717,619,290.65
  5. Step 5: Solve for x
    x = 2,044,717,619,290.65/1,615,114.86
  6. Step 6: Final answer
    x = 1,265,988.98

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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.