Home / 827,462.10-1,240,072.02-428,383.20

Finding the Fourth Proportional to 827,462.10, 1,240,072.02 and 428,383.20

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Solution

The fourth proportional to 827,462.10, 1,240,072.02 and 428,383.20 is: 641,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,462.10 : 1,240,072.02 = 428,383.20 : x
  2. Step 2: Convert to fraction form
    827,462.10/1,240,072.02 = 428,383.20/x
  3. Step 3: Cross multiply
    827,462.10x = 1,240,072.02 × 428,383.20
  4. Step 4: Simplify right side
    827,462.10x = 531,226,020,158.06
  5. Step 5: Solve for x
    x = 531,226,020,158.06/827,462.10
  6. Step 6: Final answer
    x = 641,994.38

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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.