Home / 1,018,960-1,404,682.78-712,083.64

Finding the Fourth Proportional to 1,018,960, 1,404,682.78 and 712,083.64

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Solution

The fourth proportional to 1,018,960, 1,404,682.78 and 712,083.64 is: 981,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,960 : 1,404,682.78 = 712,083.64 : x
  2. Step 2: Convert to fraction form
    1,018,960/1,404,682.78 = 712,083.64/x
  3. Step 3: Cross multiply
    1,018,960x = 1,404,682.78 × 712,083.64
  4. Step 4: Simplify right side
    1,018,960x = 1,000,251,627,027.72
  5. Step 5: Solve for x
    x = 1,000,251,627,027.72/1,018,960
  6. Step 6: Final answer
    x = 981,639.74

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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.