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Finding the Fourth Proportional to 499,538.94, 689,445.32 and 371,328.90

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Solution

The fourth proportional to 499,538.94, 689,445.32 and 371,328.90 is: 512,494.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,538.94 : 689,445.32 = 371,328.90 : x
  2. Step 2: Convert to fraction form
    499,538.94/689,445.32 = 371,328.90/x
  3. Step 3: Cross multiply
    499,538.94x = 689,445.32 × 371,328.90
  4. Step 4: Simplify right side
    499,538.94x = 256,010,970,429.10
  5. Step 5: Solve for x
    x = 256,010,970,429.10/499,538.94
  6. Step 6: Final answer
    x = 512,494.52

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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.