Home / 771,830.72-1,065,129.60-449,761.76

Finding the Fourth Proportional to 771,830.72, 1,065,129.60 and 449,761.76

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Solution

The fourth proportional to 771,830.72, 1,065,129.60 and 449,761.76 is: 620,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,830.72 : 1,065,129.60 = 449,761.76 : x
  2. Step 2: Convert to fraction form
    771,830.72/1,065,129.60 = 449,761.76/x
  3. Step 3: Cross multiply
    771,830.72x = 1,065,129.60 × 449,761.76
  4. Step 4: Simplify right side
    771,830.72x = 479,054,563,524.10
  5. Step 5: Solve for x
    x = 479,054,563,524.10/771,830.72
  6. Step 6: Final answer
    x = 620,673.10

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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.