Home / 579,214.40-868,821.60-379,630.40

Finding the Fourth Proportional to 579,214.40, 868,821.60 and 379,630.40

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Solution

The fourth proportional to 579,214.40, 868,821.60 and 379,630.40 is: 569,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,214.40 : 868,821.60 = 379,630.40 : x
  2. Step 2: Convert to fraction form
    579,214.40/868,821.60 = 379,630.40/x
  3. Step 3: Cross multiply
    579,214.40x = 868,821.60 × 379,630.40
  4. Step 4: Simplify right side
    579,214.40x = 329,831,091,536.64
  5. Step 5: Solve for x
    x = 329,831,091,536.64/579,214.40
  6. Step 6: Final answer
    x = 569,445.60

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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.