Home / 810,384.57-1,118,398.05-447,879.20

Finding the Fourth Proportional to 810,384.57, 1,118,398.05 and 447,879.20

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Solution

The fourth proportional to 810,384.57, 1,118,398.05 and 447,879.20 is: 618,110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,384.57 : 1,118,398.05 = 447,879.20 : x
  2. Step 2: Convert to fraction form
    810,384.57/1,118,398.05 = 447,879.20/x
  3. Step 3: Cross multiply
    810,384.57x = 1,118,398.05 × 447,879.20
  4. Step 4: Simplify right side
    810,384.57x = 500,907,218,323.57
  5. Step 5: Solve for x
    x = 500,907,218,323.57/810,384.57
  6. Step 6: Final answer
    x = 618,110.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.