Home / 821,756.22-1,134,372.72-499,569.18

Finding the Fourth Proportional to 821,756.22, 1,134,372.72 and 499,569.18

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Solution

The fourth proportional to 821,756.22, 1,134,372.72 and 499,569.18 is: 689,617.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,756.22 : 1,134,372.72 = 499,569.18 : x
  2. Step 2: Convert to fraction form
    821,756.22/1,134,372.72 = 499,569.18/x
  3. Step 3: Cross multiply
    821,756.22x = 1,134,372.72 × 499,569.18
  4. Step 4: Simplify right side
    821,756.22x = 566,697,649,544.77
  5. Step 5: Solve for x
    x = 566,697,649,544.77/821,756.22
  6. Step 6: Final answer
    x = 689,617.72

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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.