Home / 810,998.45-1,119,132.64-448,400.53

Finding the Fourth Proportional to 810,998.45, 1,119,132.64 and 448,400.53

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Solution

The fourth proportional to 810,998.45, 1,119,132.64 and 448,400.53 is: 618,767.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,998.45 : 1,119,132.64 = 448,400.53 : x
  2. Step 2: Convert to fraction form
    810,998.45/1,119,132.64 = 448,400.53/x
  3. Step 3: Cross multiply
    810,998.45x = 1,119,132.64 × 448,400.53
  4. Step 4: Simplify right side
    810,998.45x = 501,819,666,674.30
  5. Step 5: Solve for x
    x = 501,819,666,674.30/810,998.45
  6. Step 6: Final answer
    x = 618,767.73

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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.