Home / 1,122,857.81-1,549,657.88-664,120.86

Finding the Fourth Proportional to 1,122,857.81, 1,549,657.88 and 664,120.86

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Solution

The fourth proportional to 1,122,857.81, 1,549,657.88 and 664,120.86 is: 916,554.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,857.81 : 1,549,657.88 = 664,120.86 : x
  2. Step 2: Convert to fraction form
    1,122,857.81/1,549,657.88 = 664,120.86/x
  3. Step 3: Cross multiply
    1,122,857.81x = 1,549,657.88 × 664,120.86
  4. Step 4: Simplify right side
    1,122,857.81x = 1,029,160,120,650.77
  5. Step 5: Solve for x
    x = 1,029,160,120,650.77/1,122,857.81
  6. Step 6: Final answer
    x = 916,554.27

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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.