Home / 817,420.68-1,128,196.65-541,291.83

Finding the Fourth Proportional to 817,420.68, 1,128,196.65 and 541,291.83

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Solution

The fourth proportional to 817,420.68, 1,128,196.65 and 541,291.83 is: 747,086.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,420.68 : 1,128,196.65 = 541,291.83 : x
  2. Step 2: Convert to fraction form
    817,420.68/1,128,196.65 = 541,291.83/x
  3. Step 3: Cross multiply
    817,420.68x = 1,128,196.65 × 541,291.83
  4. Step 4: Simplify right side
    817,420.68x = 610,683,629,278.37
  5. Step 5: Solve for x
    x = 610,683,629,278.37/817,420.68
  6. Step 6: Final answer
    x = 747,086.10

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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.