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Finding the Fourth Proportional to 529,514.40, 794,271.60 and 485,968.80

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Solution

The fourth proportional to 529,514.40, 794,271.60 and 485,968.80 is: 728,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,514.40 : 794,271.60 = 485,968.80 : x
  2. Step 2: Convert to fraction form
    529,514.40/794,271.60 = 485,968.80/x
  3. Step 3: Cross multiply
    529,514.40x = 794,271.60 × 485,968.80
  4. Step 4: Simplify right side
    529,514.40x = 385,991,216,326.08
  5. Step 5: Solve for x
    x = 385,991,216,326.08/529,514.40
  6. Step 6: Final answer
    x = 728,953.20

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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.