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Finding the Fourth Proportional to 528,980.73, 730,001.85 and 299,531.79

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Solution

The fourth proportional to 528,980.73, 730,001.85 and 299,531.79 is: 413,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,980.73 : 730,001.85 = 299,531.79 : x
  2. Step 2: Convert to fraction form
    528,980.73/730,001.85 = 299,531.79/x
  3. Step 3: Cross multiply
    528,980.73x = 730,001.85 × 299,531.79
  4. Step 4: Simplify right side
    528,980.73x = 218,658,760,833.81
  5. Step 5: Solve for x
    x = 218,658,760,833.81/528,980.73
  6. Step 6: Final answer
    x = 413,358.65

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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.