Home / 1,211,420.72-1,671,771.80-667,575.96

Finding the Fourth Proportional to 1,211,420.72, 1,671,771.80 and 667,575.96

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Solution

The fourth proportional to 1,211,420.72, 1,671,771.80 and 667,575.96 is: 921,261.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,420.72 : 1,671,771.80 = 667,575.96 : x
  2. Step 2: Convert to fraction form
    1,211,420.72/1,671,771.80 = 667,575.96/x
  3. Step 3: Cross multiply
    1,211,420.72x = 1,671,771.80 × 667,575.96
  4. Step 4: Simplify right side
    1,211,420.72x = 1,116,034,664,285.93
  5. Step 5: Solve for x
    x = 1,116,034,664,285.93/1,211,420.72
  6. Step 6: Final answer
    x = 921,261.00

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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.