Home / 771,140.64-1,064,179.44-449,038.56

Finding the Fourth Proportional to 771,140.64, 1,064,179.44 and 449,038.56

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Solution

The fourth proportional to 771,140.64, 1,064,179.44 and 449,038.56 is: 619,676.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,140.64 : 1,064,179.44 = 449,038.56 : x
  2. Step 2: Convert to fraction form
    771,140.64/1,064,179.44 = 449,038.56/x
  3. Step 3: Cross multiply
    771,140.64x = 1,064,179.44 × 449,038.56
  4. Step 4: Simplify right side
    771,140.64x = 477,857,603,319.21
  5. Step 5: Solve for x
    x = 477,857,603,319.21/771,140.64
  6. Step 6: Final answer
    x = 619,676.33

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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.