Home / 1,438,072.16-2,156,802-426,920

Finding the Fourth Proportional to 1,438,072.16, 2,156,802 and 426,920

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Solution

The fourth proportional to 1,438,072.16, 2,156,802 and 426,920 is: 640,289.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,072.16 : 2,156,802 = 426,920 : x
  2. Step 2: Convert to fraction form
    1,438,072.16/2,156,802 = 426,920/x
  3. Step 3: Cross multiply
    1,438,072.16x = 2,156,802 × 426,920
  4. Step 4: Simplify right side
    1,438,072.16x = 920,781,909,840
  5. Step 5: Solve for x
    x = 920,781,909,840/1,438,072.16
  6. Step 6: Final answer
    x = 640,289.09

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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.