Home / 709,664.76-979,191.18-407,800.44

Finding the Fourth Proportional to 709,664.76, 979,191.18 and 407,800.44

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Solution

The fourth proportional to 709,664.76, 979,191.18 and 407,800.44 is: 562,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,664.76 : 979,191.18 = 407,800.44 : x
  2. Step 2: Convert to fraction form
    709,664.76/979,191.18 = 407,800.44/x
  3. Step 3: Cross multiply
    709,664.76x = 979,191.18 × 407,800.44
  4. Step 4: Simplify right side
    709,664.76x = 399,314,594,048.12
  5. Step 5: Solve for x
    x = 399,314,594,048.12/709,664.76
  6. Step 6: Final answer
    x = 562,680.60

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Double scale
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Similar ratio
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1.5x scale

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.