Home / 817,121.45-1,127,636.19-449,603.34

Finding the Fourth Proportional to 817,121.45, 1,127,636.19 and 449,603.34

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Solution

The fourth proportional to 817,121.45, 1,127,636.19 and 449,603.34 is: 620,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,121.45 : 1,127,636.19 = 449,603.34 : x
  2. Step 2: Convert to fraction form
    817,121.45/1,127,636.19 = 449,603.34/x
  3. Step 3: Cross multiply
    817,121.45x = 1,127,636.19 × 449,603.34
  4. Step 4: Simplify right side
    817,121.45x = 506,988,997,328.88
  5. Step 5: Solve for x
    x = 506,988,997,328.88/817,121.45
  6. Step 6: Final answer
    x = 620,457.34

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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.