Home / 805,072.80-1,206,226.80-425,431.20

Finding the Fourth Proportional to 805,072.80, 1,206,226.80 and 425,431.20

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Solution

The fourth proportional to 805,072.80, 1,206,226.80 and 425,431.20 is: 637,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,072.80 : 1,206,226.80 = 425,431.20 : x
  2. Step 2: Convert to fraction form
    805,072.80/1,206,226.80 = 425,431.20/x
  3. Step 3: Cross multiply
    805,072.80x = 1,206,226.80 × 425,431.20
  4. Step 4: Simplify right side
    805,072.80x = 513,166,514,996.16
  5. Step 5: Solve for x
    x = 513,166,514,996.16/805,072.80
  6. Step 6: Final answer
    x = 637,416.29

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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.