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Finding the Fourth Proportional to 876,940.40, 1,315,410.60 and 497,714.60

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Solution

The fourth proportional to 876,940.40, 1,315,410.60 and 497,714.60 is: 746,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,940.40 : 1,315,410.60 = 497,714.60 : x
  2. Step 2: Convert to fraction form
    876,940.40/1,315,410.60 = 497,714.60/x
  3. Step 3: Cross multiply
    876,940.40x = 1,315,410.60 × 497,714.60
  4. Step 4: Simplify right side
    876,940.40x = 654,699,060,614.76
  5. Step 5: Solve for x
    x = 654,699,060,614.76/876,940.40
  6. Step 6: Final answer
    x = 746,571.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.