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Finding the Fourth Proportional to 528,326.59, 729,090.70 and 301,976.95

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Solution

The fourth proportional to 528,326.59, 729,090.70 and 301,976.95 is: 416,728.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,326.59 : 729,090.70 = 301,976.95 : x
  2. Step 2: Convert to fraction form
    528,326.59/729,090.70 = 301,976.95/x
  3. Step 3: Cross multiply
    528,326.59x = 729,090.70 × 301,976.95
  4. Step 4: Simplify right side
    528,326.59x = 220,168,585,859.37
  5. Step 5: Solve for x
    x = 220,168,585,859.37/528,326.59
  6. Step 6: Final answer
    x = 416,728.19

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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.