Home / 811,817.67-1,217,070.27-338,857.05

Finding the Fourth Proportional to 811,817.67, 1,217,070.27 and 338,857.05

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Solution

The fourth proportional to 811,817.67, 1,217,070.27 and 338,857.05 is: 508,011.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,817.67 : 1,217,070.27 = 338,857.05 : x
  2. Step 2: Convert to fraction form
    811,817.67/1,217,070.27 = 338,857.05/x
  3. Step 3: Cross multiply
    811,817.67x = 1,217,070.27 × 338,857.05
  4. Step 4: Simplify right side
    811,817.67x = 412,412,841,334.90
  5. Step 5: Solve for x
    x = 412,412,841,334.90/811,817.67
  6. Step 6: Final answer
    x = 508,011.66

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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.