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Finding the Fourth Proportional to 525,421.83, 724,801.95 and 321,571.56

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Solution

The fourth proportional to 525,421.83, 724,801.95 and 321,571.56 is: 443,597.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,421.83 : 724,801.95 = 321,571.56 : x
  2. Step 2: Convert to fraction form
    525,421.83/724,801.95 = 321,571.56/x
  3. Step 3: Cross multiply
    525,421.83x = 724,801.95 × 321,571.56
  4. Step 4: Simplify right side
    525,421.83x = 233,075,693,752.54
  5. Step 5: Solve for x
    x = 233,075,693,752.54/525,421.83
  6. Step 6: Final answer
    x = 443,597.28

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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.