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Finding the Fourth Proportional to 545,322.78, 752,350.67 and 315,754.77

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Solution

The fourth proportional to 545,322.78, 752,350.67 and 315,754.77 is: 435,628.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,322.78 : 752,350.67 = 315,754.77 : x
  2. Step 2: Convert to fraction form
    545,322.78/752,350.67 = 315,754.77/x
  3. Step 3: Cross multiply
    545,322.78x = 752,350.67 × 315,754.77
  4. Step 4: Simplify right side
    545,322.78x = 237,558,311,186.42
  5. Step 5: Solve for x
    x = 237,558,311,186.42/545,322.78
  6. Step 6: Final answer
    x = 435,628.81

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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.