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Finding the Fourth Proportional to 768,556.70, 1,152,877.10 and 319,323

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Solution

The fourth proportional to 768,556.70, 1,152,877.10 and 319,323 is: 479,001.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,556.70 : 1,152,877.10 = 319,323 : x
  2. Step 2: Convert to fraction form
    768,556.70/1,152,877.10 = 319,323/x
  3. Step 3: Cross multiply
    768,556.70x = 1,152,877.10 × 319,323
  4. Step 4: Simplify right side
    768,556.70x = 368,140,174,203.30
  5. Step 5: Solve for x
    x = 368,140,174,203.30/768,556.70
  6. Step 6: Final answer
    x = 479,001.97

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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.