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Finding the Fourth Proportional to 537,579.56, 741,859.62 and 311,220.20

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Solution

The fourth proportional to 537,579.56, 741,859.62 and 311,220.20 is: 429,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,579.56 : 741,859.62 = 311,220.20 : x
  2. Step 2: Convert to fraction form
    537,579.56/741,859.62 = 311,220.20/x
  3. Step 3: Cross multiply
    537,579.56x = 741,859.62 × 311,220.20
  4. Step 4: Simplify right side
    537,579.56x = 230,881,699,308.32
  5. Step 5: Solve for x
    x = 230,881,699,308.32/537,579.56
  6. Step 6: Final answer
    x = 429,483.78

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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.