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Finding the Fourth Proportional to 545,428.32, 752,713.29 and 303,695.58

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Solution

The fourth proportional to 545,428.32, 752,713.29 and 303,695.58 is: 419,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,428.32 : 752,713.29 = 303,695.58 : x
  2. Step 2: Convert to fraction form
    545,428.32/752,713.29 = 303,695.58/x
  3. Step 3: Cross multiply
    545,428.32x = 752,713.29 × 303,695.58
  4. Step 4: Simplify right side
    545,428.32x = 228,595,699,180.26
  5. Step 5: Solve for x
    x = 228,595,699,180.26/545,428.32
  6. Step 6: Final answer
    x = 419,112.27

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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.