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Finding the Fourth Proportional to 511,566.40, 768,271.20 and 371,483.20

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Solution

The fourth proportional to 511,566.40, 768,271.20 and 371,483.20 is: 557,894.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,566.40 : 768,271.20 = 371,483.20 : x
  2. Step 2: Convert to fraction form
    511,566.40/768,271.20 = 371,483.20/x
  3. Step 3: Cross multiply
    511,566.40x = 768,271.20 × 371,483.20
  4. Step 4: Simplify right side
    511,566.40x = 285,399,843,843.84
  5. Step 5: Solve for x
    x = 285,399,843,843.84/511,566.40
  6. Step 6: Final answer
    x = 557,894.04

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1.5x scale

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.