Home / 393,784.07-542,278.41-342,077.45

Finding the Fourth Proportional to 393,784.07, 542,278.41 and 342,077.45

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Solution

The fourth proportional to 393,784.07, 542,278.41 and 342,077.45 is: 471,073.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,784.07 : 542,278.41 = 342,077.45 : x
  2. Step 2: Convert to fraction form
    393,784.07/542,278.41 = 342,077.45/x
  3. Step 3: Cross multiply
    393,784.07x = 542,278.41 × 342,077.45
  4. Step 4: Simplify right side
    393,784.07x = 185,501,215,682.86
  5. Step 5: Solve for x
    x = 185,501,215,682.86/393,784.07
  6. Step 6: Final answer
    x = 471,073.44

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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.