Home / 645,619.20-968,428.80-531,457.80

Finding the Fourth Proportional to 645,619.20, 968,428.80 and 531,457.80

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Solution

The fourth proportional to 645,619.20, 968,428.80 and 531,457.80 is: 797,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,619.20 : 968,428.80 = 531,457.80 : x
  2. Step 2: Convert to fraction form
    645,619.20/968,428.80 = 531,457.80/x
  3. Step 3: Cross multiply
    645,619.20x = 968,428.80 × 531,457.80
  4. Step 4: Simplify right side
    645,619.20x = 514,679,039,504.64
  5. Step 5: Solve for x
    x = 514,679,039,504.64/645,619.20
  6. Step 6: Final answer
    x = 797,186.70

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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.