Home / 811,769.45-1,217,457.34-338,196.47

Finding the Fourth Proportional to 811,769.45, 1,217,457.34 and 338,196.47

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Solution

The fourth proportional to 811,769.45, 1,217,457.34 and 338,196.47 is: 507,212.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,769.45 : 1,217,457.34 = 338,196.47 : x
  2. Step 2: Convert to fraction form
    811,769.45/1,217,457.34 = 338,196.47/x
  3. Step 3: Cross multiply
    811,769.45x = 1,217,457.34 × 338,196.47
  4. Step 4: Simplify right side
    811,769.45x = 411,739,767,830.81
  5. Step 5: Solve for x
    x = 411,739,767,830.81/811,769.45
  6. Step 6: Final answer
    x = 507,212.69

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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.