Home / 1,383,268.39-1,908,906.59-771,421.81

Finding the Fourth Proportional to 1,383,268.39, 1,908,906.59 and 771,421.81

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Solution

The fourth proportional to 1,383,268.39, 1,908,906.59 and 771,421.81 is: 1,064,559.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,268.39 : 1,908,906.59 = 771,421.81 : x
  2. Step 2: Convert to fraction form
    1,383,268.39/1,908,906.59 = 771,421.81/x
  3. Step 3: Cross multiply
    1,383,268.39x = 1,908,906.59 × 771,421.81
  4. Step 4: Simplify right side
    1,383,268.39x = 1,472,572,171,042.18
  5. Step 5: Solve for x
    x = 1,472,572,171,042.18/1,383,268.39
  6. Step 6: Final answer
    x = 1,064,559.98

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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.