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Finding the Fourth Proportional to 525,980.05, 725,681.54 and 321,818.13

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Solution

The fourth proportional to 525,980.05, 725,681.54 and 321,818.13 is: 444,004.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,980.05 : 725,681.54 = 321,818.13 : x
  2. Step 2: Convert to fraction form
    525,980.05/725,681.54 = 321,818.13/x
  3. Step 3: Cross multiply
    525,980.05x = 725,681.54 × 321,818.13
  4. Step 4: Simplify right side
    525,980.05x = 233,537,476,982.87
  5. Step 5: Solve for x
    x = 233,537,476,982.87/525,980.05
  6. Step 6: Final answer
    x = 444,004.44

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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.