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Finding the Fourth Proportional to 529,636.83, 730,903.58 and 287,919.87

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Solution

The fourth proportional to 529,636.83, 730,903.58 and 287,919.87 is: 397,332.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,636.83 : 730,903.58 = 287,919.87 : x
  2. Step 2: Convert to fraction form
    529,636.83/730,903.58 = 287,919.87/x
  3. Step 3: Cross multiply
    529,636.83x = 730,903.58 × 287,919.87
  4. Step 4: Simplify right side
    529,636.83x = 210,441,662,296.54
  5. Step 5: Solve for x
    x = 210,441,662,296.54/529,636.83
  6. Step 6: Final answer
    x = 397,332.00

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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.