Home / 1,211,421.83-1,671,739.16-667,607.87

Finding the Fourth Proportional to 1,211,421.83, 1,671,739.16 and 667,607.87

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Solution

The fourth proportional to 1,211,421.83, 1,671,739.16 and 667,607.87 is: 921,286.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,421.83 : 1,671,739.16 = 667,607.87 : x
  2. Step 2: Convert to fraction form
    1,211,421.83/1,671,739.16 = 667,607.87/x
  3. Step 3: Cross multiply
    1,211,421.83x = 1,671,739.16 × 667,607.87
  4. Step 4: Simplify right side
    1,211,421.83x = 1,116,066,220,644.50
  5. Step 5: Solve for x
    x = 1,116,066,220,644.50/1,211,421.83
  6. Step 6: Final answer
    x = 921,286.21

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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.