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Finding the Fourth Proportional to 525,975.76, 725,675.64 and 321,813.84

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Solution

The fourth proportional to 525,975.76, 725,675.64 and 321,813.84 is: 443,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,975.76 : 725,675.64 = 321,813.84 : x
  2. Step 2: Convert to fraction form
    525,975.76/725,675.64 = 321,813.84/x
  3. Step 3: Cross multiply
    525,975.76x = 725,675.64 × 321,813.84
  4. Step 4: Simplify right side
    525,975.76x = 233,532,464,302.86
  5. Step 5: Solve for x
    x = 233,532,464,302.86/525,975.76
  6. Step 6: Final answer
    x = 443,998.53

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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.