Home / 578,768.40-868,152.60-199,688.40

Finding the Fourth Proportional to 578,768.40, 868,152.60 and 199,688.40

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Solution

The fourth proportional to 578,768.40, 868,152.60 and 199,688.40 is: 299,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,768.40 : 868,152.60 = 199,688.40 : x
  2. Step 2: Convert to fraction form
    578,768.40/868,152.60 = 199,688.40/x
  3. Step 3: Cross multiply
    578,768.40x = 868,152.60 × 199,688.40
  4. Step 4: Simplify right side
    578,768.40x = 173,360,003,649.84
  5. Step 5: Solve for x
    x = 173,360,003,649.84/578,768.40
  6. Step 6: Final answer
    x = 299,532.60

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.