Home / 530,007-731,409.66-303,783.72

Finding the Fourth Proportional to 530,007, 731,409.66 and 303,783.72

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Solution

The fourth proportional to 530,007, 731,409.66 and 303,783.72 is: 419,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,007 : 731,409.66 = 303,783.72 : x
  2. Step 2: Convert to fraction form
    530,007/731,409.66 = 303,783.72/x
  3. Step 3: Cross multiply
    530,007x = 731,409.66 × 303,783.72
  4. Step 4: Simplify right side
    530,007x = 222,190,347,358.74
  5. Step 5: Solve for x
    x = 222,190,347,358.74/530,007
  6. Step 6: Final answer
    x = 419,221.53

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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.