Home / 768,629.93-1,152,321.75-319,686.89

Finding the Fourth Proportional to 768,629.93, 1,152,321.75 and 319,686.89

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Solution

The fourth proportional to 768,629.93, 1,152,321.75 and 319,686.89 is: 479,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,629.93 : 1,152,321.75 = 319,686.89 : x
  2. Step 2: Convert to fraction form
    768,629.93/1,152,321.75 = 319,686.89/x
  3. Step 3: Cross multiply
    768,629.93x = 1,152,321.75 × 319,686.89
  4. Step 4: Simplify right side
    768,629.93x = 368,382,150,775.25
  5. Step 5: Solve for x
    x = 368,382,150,775.25/768,629.93
  6. Step 6: Final answer
    x = 479,271.15

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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.