Home / 817,103.63-1,226,423.33-427,889.40

Finding the Fourth Proportional to 817,103.63, 1,226,423.33 and 427,889.40

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Solution

The fourth proportional to 817,103.63, 1,226,423.33 and 427,889.40 is: 642,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,103.63 : 1,226,423.33 = 427,889.40 : x
  2. Step 2: Convert to fraction form
    817,103.63/1,226,423.33 = 427,889.40/x
  3. Step 3: Cross multiply
    817,103.63x = 1,226,423.33 × 427,889.40
  4. Step 4: Simplify right side
    817,103.63x = 524,773,540,680.26
  5. Step 5: Solve for x
    x = 524,773,540,680.26/817,103.63
  6. Step 6: Final answer
    x = 642,236.22

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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.