Home / 729,076,604.08-1,006,128,779.85-394,549,142.29

Finding the Fourth Proportional to 729,076,604.08, 1,006,128,779.85 and 394,549,142.29

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Solution

The fourth proportional to 729,076,604.08, 1,006,128,779.85 and 394,549,142.29 is: 544,479,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,076,604.08 : 1,006,128,779.85 = 394,549,142.29 : x
  2. Step 2: Convert to fraction form
    729,076,604.08/1,006,128,779.85 = 394,549,142.29/x
  3. Step 3: Cross multiply
    729,076,604.08x = 1,006,128,779.85 × 394,549,142.29
  4. Step 4: Simplify right side
    729,076,604.08x = 396,967,247,123,101,760
  5. Step 5: Solve for x
    x = 396,967,247,123,101,760/729,076,604.08
  6. Step 6: Final answer
    x = 544,479,475.68

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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.