Home / 645,198.22-890,371.47-358,718.23

Finding the Fourth Proportional to 645,198.22, 890,371.47 and 358,718.23

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Solution

The fourth proportional to 645,198.22, 890,371.47 and 358,718.23 is: 495,030.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,198.22 : 890,371.47 = 358,718.23 : x
  2. Step 2: Convert to fraction form
    645,198.22/890,371.47 = 358,718.23/x
  3. Step 3: Cross multiply
    645,198.22x = 890,371.47 × 358,718.23
  4. Step 4: Simplify right side
    645,198.22x = 319,392,477,760.90
  5. Step 5: Solve for x
    x = 319,392,477,760.90/645,198.22
  6. Step 6: Final answer
    x = 495,030.00

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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.