Home / 861,406.47-1,188,719.94-474,218.78

Finding the Fourth Proportional to 861,406.47, 1,188,719.94 and 474,218.78

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Solution

The fourth proportional to 861,406.47, 1,188,719.94 and 474,218.78 is: 654,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,406.47 : 1,188,719.94 = 474,218.78 : x
  2. Step 2: Convert to fraction form
    861,406.47/1,188,719.94 = 474,218.78/x
  3. Step 3: Cross multiply
    861,406.47x = 1,188,719.94 × 474,218.78
  4. Step 4: Simplify right side
    861,406.47x = 563,713,316,218.99
  5. Step 5: Solve for x
    x = 563,713,316,218.99/861,406.47
  6. Step 6: Final answer
    x = 654,410.36

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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.