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Finding the Fourth Proportional to 771,679.73, 1,064,830.24 and 449,321.87

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Solution

The fourth proportional to 771,679.73, 1,064,830.24 and 449,321.87 is: 620,013.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,679.73 : 1,064,830.24 = 449,321.87 : x
  2. Step 2: Convert to fraction form
    771,679.73/1,064,830.24 = 449,321.87/x
  3. Step 3: Cross multiply
    771,679.73x = 1,064,830.24 × 449,321.87
  4. Step 4: Simplify right side
    771,679.73x = 478,451,514,669.35
  5. Step 5: Solve for x
    x = 478,451,514,669.35/771,679.73
  6. Step 6: Final answer
    x = 620,013.07

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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.