Home / 810,900.96-1,119,010.32-448,301.76

Finding the Fourth Proportional to 810,900.96, 1,119,010.32 and 448,301.76

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Solution

The fourth proportional to 810,900.96, 1,119,010.32 and 448,301.76 is: 618,638.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,900.96 : 1,119,010.32 = 448,301.76 : x
  2. Step 2: Convert to fraction form
    810,900.96/1,119,010.32 = 448,301.76/x
  3. Step 3: Cross multiply
    810,900.96x = 1,119,010.32 × 448,301.76
  4. Step 4: Simplify right side
    810,900.96x = 501,654,295,914.16
  5. Step 5: Solve for x
    x = 501,654,295,914.16/810,900.96
  6. Step 6: Final answer
    x = 618,638.18

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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.