Home / 811,005.48-1,119,139.47-448,400.88

Finding the Fourth Proportional to 811,005.48, 1,119,139.47 and 448,400.88

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Solution

The fourth proportional to 811,005.48, 1,119,139.47 and 448,400.88 is: 618,766.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,005.48 : 1,119,139.47 = 448,400.88 : x
  2. Step 2: Convert to fraction form
    811,005.48/1,119,139.47 = 448,400.88/x
  3. Step 3: Cross multiply
    811,005.48x = 1,119,139.47 × 448,400.88
  4. Step 4: Simplify right side
    811,005.48x = 501,823,118,993.96
  5. Step 5: Solve for x
    x = 501,823,118,993.96/811,005.48
  6. Step 6: Final answer
    x = 618,766.62

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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.