Home / 811,456.56-1,217,295.60-338,031.18

Finding the Fourth Proportional to 811,456.56, 1,217,295.60 and 338,031.18

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Solution

The fourth proportional to 811,456.56, 1,217,295.60 and 338,031.18 is: 507,092.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,456.56 : 1,217,295.60 = 338,031.18 : x
  2. Step 2: Convert to fraction form
    811,456.56/1,217,295.60 = 338,031.18/x
  3. Step 3: Cross multiply
    811,456.56x = 1,217,295.60 × 338,031.18
  4. Step 4: Simplify right side
    811,456.56x = 411,483,868,076.81
  5. Step 5: Solve for x
    x = 411,483,868,076.81/811,456.56
  6. Step 6: Final answer
    x = 507,092.91

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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.