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Finding the Fourth Proportional to 819,841, 1,131,380.58 and 462,145

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Solution

The fourth proportional to 819,841, 1,131,380.58 and 462,145 is: 637,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,841 : 1,131,380.58 = 462,145 : x
  2. Step 2: Convert to fraction form
    819,841/1,131,380.58 = 462,145/x
  3. Step 3: Cross multiply
    819,841x = 1,131,380.58 × 462,145
  4. Step 4: Simplify right side
    819,841x = 522,861,878,144.10
  5. Step 5: Solve for x
    x = 522,861,878,144.10/819,841
  6. Step 6: Final answer
    x = 637,760.10

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1.5x scale

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.