Home / 768,539.67-1,152,022.05-319,521.30

Finding the Fourth Proportional to 768,539.67, 1,152,022.05 and 319,521.30

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Solution

The fourth proportional to 768,539.67, 1,152,022.05 and 319,521.30 is: 478,954.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,539.67 : 1,152,022.05 = 319,521.30 : x
  2. Step 2: Convert to fraction form
    768,539.67/1,152,022.05 = 319,521.30/x
  3. Step 3: Cross multiply
    768,539.67x = 1,152,022.05 × 319,521.30
  4. Step 4: Simplify right side
    768,539.67x = 368,095,583,044.67
  5. Step 5: Solve for x
    x = 368,095,583,044.67/768,539.67
  6. Step 6: Final answer
    x = 478,954.56

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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.