Home / 820,612.90-1,230,796.23-259,574.50

Finding the Fourth Proportional to 820,612.90, 1,230,796.23 and 259,574.50

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Solution

The fourth proportional to 820,612.90, 1,230,796.23 and 259,574.50 is: 389,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,612.90 : 1,230,796.23 = 259,574.50 : x
  2. Step 2: Convert to fraction form
    820,612.90/1,230,796.23 = 259,574.50/x
  3. Step 3: Cross multiply
    820,612.90x = 1,230,796.23 × 259,574.50
  4. Step 4: Simplify right side
    820,612.90x = 319,483,316,004.14
  5. Step 5: Solve for x
    x = 319,483,316,004.14/820,612.90
  6. Step 6: Final answer
    x = 389,322.80

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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.