Home / 819,268.31-1,130,127.21-512,812.71

Finding the Fourth Proportional to 819,268.31, 1,130,127.21 and 512,812.71

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Solution

The fourth proportional to 819,268.31, 1,130,127.21 and 512,812.71 is: 707,391.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,268.31 : 1,130,127.21 = 512,812.71 : x
  2. Step 2: Convert to fraction form
    819,268.31/1,130,127.21 = 512,812.71/x
  3. Step 3: Cross multiply
    819,268.31x = 1,130,127.21 × 512,812.71
  4. Step 4: Simplify right side
    819,268.31x = 579,543,597,204.84
  5. Step 5: Solve for x
    x = 579,543,597,204.84/819,268.31
  6. Step 6: Final answer
    x = 707,391.69

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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.