Home / 857,782.32-1,284,639.57-679,716.78

Finding the Fourth Proportional to 857,782.32, 1,284,639.57 and 679,716.78

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Solution

The fourth proportional to 857,782.32, 1,284,639.57 and 679,716.78 is: 1,017,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,782.32 : 1,284,639.57 = 679,716.78 : x
  2. Step 2: Convert to fraction form
    857,782.32/1,284,639.57 = 679,716.78/x
  3. Step 3: Cross multiply
    857,782.32x = 1,284,639.57 × 679,716.78
  4. Step 4: Simplify right side
    857,782.32x = 873,191,071,980.99
  5. Step 5: Solve for x
    x = 873,191,071,980.99/857,782.32
  6. Step 6: Final answer
    x = 1,017,963.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.