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Finding the Fourth Proportional to 529,495.58, 730,708.70 and 287,778.74

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Solution

The fourth proportional to 529,495.58, 730,708.70 and 287,778.74 is: 397,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,495.58 : 730,708.70 = 287,778.74 : x
  2. Step 2: Convert to fraction form
    529,495.58/730,708.70 = 287,778.74/x
  3. Step 3: Cross multiply
    529,495.58x = 730,708.70 × 287,778.74
  4. Step 4: Simplify right side
    529,495.58x = 210,282,423,900.60
  5. Step 5: Solve for x
    x = 210,282,423,900.60/529,495.58
  6. Step 6: Final answer
    x = 397,137.26

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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.