Home / 813,936.40-1,220,904.60-530,501.20

Finding the Fourth Proportional to 813,936.40, 1,220,904.60 and 530,501.20

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Solution

The fourth proportional to 813,936.40, 1,220,904.60 and 530,501.20 is: 795,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,936.40 : 1,220,904.60 = 530,501.20 : x
  2. Step 2: Convert to fraction form
    813,936.40/1,220,904.60 = 530,501.20/x
  3. Step 3: Cross multiply
    813,936.40x = 1,220,904.60 × 530,501.20
  4. Step 4: Simplify right side
    813,936.40x = 647,691,355,385.52
  5. Step 5: Solve for x
    x = 647,691,355,385.52/813,936.40
  6. Step 6: Final answer
    x = 795,751.80

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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.