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Finding the Fourth Proportional to 525,670.74, 725,384.70 and 321,637.01

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Solution

The fourth proportional to 525,670.74, 725,384.70 and 321,637.01 is: 443,834.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,670.74 : 725,384.70 = 321,637.01 : x
  2. Step 2: Convert to fraction form
    525,670.74/725,384.70 = 321,637.01/x
  3. Step 3: Cross multiply
    525,670.74x = 725,384.70 × 321,637.01
  4. Step 4: Simplify right side
    525,670.74x = 233,310,562,380.82
  5. Step 5: Solve for x
    x = 233,310,562,380.82/525,670.74
  6. Step 6: Final answer
    x = 443,834.03

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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.