Home / 768,853.80-1,152,848.73-319,272.21

Finding the Fourth Proportional to 768,853.80, 1,152,848.73 and 319,272.21

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Solution

The fourth proportional to 768,853.80, 1,152,848.73 and 319,272.21 is: 478,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,853.80 : 1,152,848.73 = 319,272.21 : x
  2. Step 2: Convert to fraction form
    768,853.80/1,152,848.73 = 319,272.21/x
  3. Step 3: Cross multiply
    768,853.80x = 1,152,848.73 × 319,272.21
  4. Step 4: Simplify right side
    768,853.80x = 368,072,561,822.79
  5. Step 5: Solve for x
    x = 368,072,561,822.79/768,853.80
  6. Step 6: Final answer
    x = 478,728.94

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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.