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Finding the Fourth Proportional to 528,505.73, 729,327.78 and 299,058.84

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Solution

The fourth proportional to 528,505.73, 729,327.78 and 299,058.84 is: 412,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,505.73 : 729,327.78 = 299,058.84 : x
  2. Step 2: Convert to fraction form
    528,505.73/729,327.78 = 299,058.84/x
  3. Step 3: Cross multiply
    528,505.73x = 729,327.78 × 299,058.84
  4. Step 4: Simplify right side
    528,505.73x = 218,111,919,866.58
  5. Step 5: Solve for x
    x = 218,111,919,866.58/528,505.73
  6. Step 6: Final answer
    x = 412,695.47

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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.