Home / 811,946.80-1,217,401.80-338,820.40

Finding the Fourth Proportional to 811,946.80, 1,217,401.80 and 338,820.40

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Solution

The fourth proportional to 811,946.80, 1,217,401.80 and 338,820.40 is: 508,014.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,946.80 : 1,217,401.80 = 338,820.40 : x
  2. Step 2: Convert to fraction form
    811,946.80/1,217,401.80 = 338,820.40/x
  3. Step 3: Cross multiply
    811,946.80x = 1,217,401.80 × 338,820.40
  4. Step 4: Simplify right side
    811,946.80x = 412,480,564,836.72
  5. Step 5: Solve for x
    x = 412,480,564,836.72/811,946.80
  6. Step 6: Final answer
    x = 508,014.27

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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.