Home / 538,000.89-742,412.80-308,546.32

Finding the Fourth Proportional to 538,000.89, 742,412.80 and 308,546.32

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Solution

The fourth proportional to 538,000.89, 742,412.80 and 308,546.32 is: 425,777.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,000.89 : 742,412.80 = 308,546.32 : x
  2. Step 2: Convert to fraction form
    538,000.89/742,412.80 = 308,546.32/x
  3. Step 3: Cross multiply
    538,000.89x = 742,412.80 × 308,546.32
  4. Step 4: Simplify right side
    538,000.89x = 229,068,735,890.55
  5. Step 5: Solve for x
    x = 229,068,735,890.55/538,000.89
  6. Step 6: Final answer
    x = 425,777.62

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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.