Home / 820,320.48-1,230,473.44-259,355.20

Finding the Fourth Proportional to 820,320.48, 1,230,473.44 and 259,355.20

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Solution

The fourth proportional to 820,320.48, 1,230,473.44 and 259,355.20 is: 389,030.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,320.48 : 1,230,473.44 = 259,355.20 : x
  2. Step 2: Convert to fraction form
    820,320.48/1,230,473.44 = 259,355.20/x
  3. Step 3: Cross multiply
    820,320.48x = 1,230,473.44 × 259,355.20
  4. Step 4: Simplify right side
    820,320.48x = 319,129,685,125.89
  5. Step 5: Solve for x
    x = 319,129,685,125.89/820,320.48
  6. Step 6: Final answer
    x = 389,030.50

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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.