Home / 808,916.40-1,212,791.40-454,039.20

Finding the Fourth Proportional to 808,916.40, 1,212,791.40 and 454,039.20

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Solution

The fourth proportional to 808,916.40, 1,212,791.40 and 454,039.20 is: 680,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,916.40 : 1,212,791.40 = 454,039.20 : x
  2. Step 2: Convert to fraction form
    808,916.40/1,212,791.40 = 454,039.20/x
  3. Step 3: Cross multiply
    808,916.40x = 1,212,791.40 × 454,039.20
  4. Step 4: Simplify right side
    808,916.40x = 550,654,837,022.88
  5. Step 5: Solve for x
    x = 550,654,837,022.88/808,916.40
  6. Step 6: Final answer
    x = 680,731.45

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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.