Home / 529,928.71-731,406.64-300,490.54

Finding the Fourth Proportional to 529,928.71, 731,406.64 and 300,490.54

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Solution

The fourth proportional to 529,928.71, 731,406.64 and 300,490.54 is: 414,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,928.71 : 731,406.64 = 300,490.54 : x
  2. Step 2: Convert to fraction form
    529,928.71/731,406.64 = 300,490.54/x
  3. Step 3: Cross multiply
    529,928.71x = 731,406.64 × 300,490.54
  4. Step 4: Simplify right side
    529,928.71x = 219,780,776,213.19
  5. Step 5: Solve for x
    x = 219,780,776,213.19/529,928.71
  6. Step 6: Final answer
    x = 414,736.50

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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.