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Finding the Fourth Proportional to 525,392.73, 725,059.76 and 310,716.81

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Solution

The fourth proportional to 525,392.73, 725,059.76 and 310,716.81 is: 428,799.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,392.73 : 725,059.76 = 310,716.81 : x
  2. Step 2: Convert to fraction form
    525,392.73/725,059.76 = 310,716.81/x
  3. Step 3: Cross multiply
    525,392.73x = 725,059.76 × 310,716.81
  4. Step 4: Simplify right side
    525,392.73x = 225,288,254,132.98
  5. Step 5: Solve for x
    x = 225,288,254,132.98/525,392.73
  6. Step 6: Final answer
    x = 428,799.72

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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.