Home / 820,431.86-1,132,252.80-457,926.44

Finding the Fourth Proportional to 820,431.86, 1,132,252.80 and 457,926.44

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Solution

The fourth proportional to 820,431.86, 1,132,252.80 and 457,926.44 is: 631,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,431.86 : 1,132,252.80 = 457,926.44 : x
  2. Step 2: Convert to fraction form
    820,431.86/1,132,252.80 = 457,926.44/x
  3. Step 3: Cross multiply
    820,431.86x = 1,132,252.80 × 457,926.44
  4. Step 4: Simplify right side
    820,431.86x = 518,488,493,884.03
  5. Step 5: Solve for x
    x = 518,488,493,884.03/820,431.86
  6. Step 6: Final answer
    x = 631,970.21

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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.