Home / 729,453,927.89-1,006,654,541.37-394,933,740.23

Finding the Fourth Proportional to 729,453,927.89, 1,006,654,541.37 and 394,933,740.23

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Solution

The fourth proportional to 729,453,927.89, 1,006,654,541.37 and 394,933,740.23 is: 545,012,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,453,927.89 : 1,006,654,541.37 = 394,933,740.23 : x
  2. Step 2: Convert to fraction form
    729,453,927.89/1,006,654,541.37 = 394,933,740.23/x
  3. Step 3: Cross multiply
    729,453,927.89x = 1,006,654,541.37 × 394,933,740.23
  4. Step 4: Simplify right side
    729,453,927.89x = 397,561,843,142,769,408
  5. Step 5: Solve for x
    x = 397,561,843,142,769,408/729,453,927.89
  6. Step 6: Final answer
    x = 545,012,958.25

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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.