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Finding the Fourth Proportional to 528,040.26, 728,821.59 and 313,304.94

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Solution

The fourth proportional to 528,040.26, 728,821.59 and 313,304.94 is: 432,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,040.26 : 728,821.59 = 313,304.94 : x
  2. Step 2: Convert to fraction form
    528,040.26/728,821.59 = 313,304.94/x
  3. Step 3: Cross multiply
    528,040.26x = 728,821.59 × 313,304.94
  4. Step 4: Simplify right side
    528,040.26x = 228,343,404,525.66
  5. Step 5: Solve for x
    x = 228,343,404,525.66/528,040.26
  6. Step 6: Final answer
    x = 432,435.60

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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.