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Finding the Fourth Proportional to 528,713.33, 729,622.08 and 286,993.94

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Solution

The fourth proportional to 528,713.33, 729,622.08 and 286,993.94 is: 396,050.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,713.33 : 729,622.08 = 286,993.94 : x
  2. Step 2: Convert to fraction form
    528,713.33/729,622.08 = 286,993.94/x
  3. Step 3: Cross multiply
    528,713.33x = 729,622.08 × 286,993.94
  4. Step 4: Simplify right side
    528,713.33x = 209,397,111,802.09
  5. Step 5: Solve for x
    x = 209,397,111,802.09/528,713.33
  6. Step 6: Final answer
    x = 396,050.38

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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.