Home / 709,640.76-979,158.06-407,776.44

Finding the Fourth Proportional to 709,640.76, 979,158.06 and 407,776.44

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Solution

The fourth proportional to 709,640.76, 979,158.06 and 407,776.44 is: 562,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,640.76 : 979,158.06 = 407,776.44 : x
  2. Step 2: Convert to fraction form
    709,640.76/979,158.06 = 407,776.44/x
  3. Step 3: Cross multiply
    709,640.76x = 979,158.06 × 407,776.44
  4. Step 4: Simplify right side
    709,640.76x = 399,277,587,904.11
  5. Step 5: Solve for x
    x = 399,277,587,904.11/709,640.76
  6. Step 6: Final answer
    x = 562,647.48

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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.