Home / 639,230.20-958,845.30-525,068.80

Finding the Fourth Proportional to 639,230.20, 958,845.30 and 525,068.80

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Solution

The fourth proportional to 639,230.20, 958,845.30 and 525,068.80 is: 787,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,230.20 : 958,845.30 = 525,068.80 : x
  2. Step 2: Convert to fraction form
    639,230.20/958,845.30 = 525,068.80/x
  3. Step 3: Cross multiply
    639,230.20x = 958,845.30 × 525,068.80
  4. Step 4: Simplify right side
    639,230.20x = 503,459,751,056.64
  5. Step 5: Solve for x
    x = 503,459,751,056.64/639,230.20
  6. Step 6: Final answer
    x = 787,603.20

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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.