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Finding the Fourth Proportional to 528,622.57, 729,506.15 and 286,908.04

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Solution

The fourth proportional to 528,622.57, 729,506.15 and 286,908.04 is: 395,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,622.57 : 729,506.15 = 286,908.04 : x
  2. Step 2: Convert to fraction form
    528,622.57/729,506.15 = 286,908.04/x
  3. Step 3: Cross multiply
    528,622.57x = 729,506.15 × 286,908.04
  4. Step 4: Simplify right side
    528,622.57x = 209,301,179,664.45
  5. Step 5: Solve for x
    x = 209,301,179,664.45/528,622.57
  6. Step 6: Final answer
    x = 395,936.90

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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.