Home / 405,035.75-558,530.71-347,864.38

Finding the Fourth Proportional to 405,035.75, 558,530.71 and 347,864.38

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Solution

The fourth proportional to 405,035.75, 558,530.71 and 347,864.38 is: 479,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,035.75 : 558,530.71 = 347,864.38 : x
  2. Step 2: Convert to fraction form
    405,035.75/558,530.71 = 347,864.38/x
  3. Step 3: Cross multiply
    405,035.75x = 558,530.71 × 347,864.38
  4. Step 4: Simplify right side
    405,035.75x = 194,292,936,879.12
  5. Step 5: Solve for x
    x = 194,292,936,879.12/405,035.75
  6. Step 6: Final answer
    x = 479,693.31

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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.