Home / 809,775.48-1,215,400.44-431,014.34

Finding the Fourth Proportional to 809,775.48, 1,215,400.44 and 431,014.34

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Solution

The fourth proportional to 809,775.48, 1,215,400.44 and 431,014.34 is: 646,913.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,775.48 : 1,215,400.44 = 431,014.34 : x
  2. Step 2: Convert to fraction form
    809,775.48/1,215,400.44 = 431,014.34/x
  3. Step 3: Cross multiply
    809,775.48x = 1,215,400.44 × 431,014.34
  4. Step 4: Simplify right side
    809,775.48x = 523,855,018,482.31
  5. Step 5: Solve for x
    x = 523,855,018,482.31/809,775.48
  6. Step 6: Final answer
    x = 646,913.91

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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.