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Finding the Fourth Proportional to 539,492.79, 744,388.91 and 310,005.74

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Solution

The fourth proportional to 539,492.79, 744,388.91 and 310,005.74 is: 427,744.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,492.79 : 744,388.91 = 310,005.74 : x
  2. Step 2: Convert to fraction form
    539,492.79/744,388.91 = 310,005.74/x
  3. Step 3: Cross multiply
    539,492.79x = 744,388.91 × 310,005.74
  4. Step 4: Simplify right side
    539,492.79x = 230,764,836,365.81
  5. Step 5: Solve for x
    x = 230,764,836,365.81/539,492.79
  6. Step 6: Final answer
    x = 427,744.06

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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.