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Finding the Fourth Proportional to 528,326.72, 729,090.88 and 301,977.08

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Solution

The fourth proportional to 528,326.72, 729,090.88 and 301,977.08 is: 416,728.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,326.72 : 729,090.88 = 301,977.08 : x
  2. Step 2: Convert to fraction form
    528,326.72/729,090.88 = 301,977.08/x
  3. Step 3: Cross multiply
    528,326.72x = 729,090.88 × 301,977.08
  4. Step 4: Simplify right side
    528,326.72x = 220,168,736,064.82
  5. Step 5: Solve for x
    x = 220,168,736,064.82/528,326.72
  6. Step 6: Final answer
    x = 416,728.37

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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.