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Finding the Fourth Proportional to 443,514.40, 665,271.60 and 438,848.80

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Solution

The fourth proportional to 443,514.40, 665,271.60 and 438,848.80 is: 658,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,514.40 : 665,271.60 = 438,848.80 : x
  2. Step 2: Convert to fraction form
    443,514.40/665,271.60 = 438,848.80/x
  3. Step 3: Cross multiply
    443,514.40x = 665,271.60 × 438,848.80
  4. Step 4: Simplify right side
    443,514.40x = 291,953,643,334.08
  5. Step 5: Solve for x
    x = 291,953,643,334.08/443,514.40
  6. Step 6: Final answer
    x = 658,273.20

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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.