Home / 818,116.81-1,128,998.35-455,545.01

Finding the Fourth Proportional to 818,116.81, 1,128,998.35 and 455,545.01

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Solution

The fourth proportional to 818,116.81, 1,128,998.35 and 455,545.01 is: 628,650.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,116.81 : 1,128,998.35 = 455,545.01 : x
  2. Step 2: Convert to fraction form
    818,116.81/1,128,998.35 = 455,545.01/x
  3. Step 3: Cross multiply
    818,116.81x = 1,128,998.35 × 455,545.01
  4. Step 4: Simplify right side
    818,116.81x = 514,309,568,032.66
  5. Step 5: Solve for x
    x = 514,309,568,032.66/818,116.81
  6. Step 6: Final answer
    x = 628,650.53

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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.