Home / 443,948.20-665,922.30-128,415.40

Finding the Fourth Proportional to 443,948.20, 665,922.30 and 128,415.40

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Solution

The fourth proportional to 443,948.20, 665,922.30 and 128,415.40 is: 192,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,948.20 : 665,922.30 = 128,415.40 : x
  2. Step 2: Convert to fraction form
    443,948.20/665,922.30 = 128,415.40/x
  3. Step 3: Cross multiply
    443,948.20x = 665,922.30 × 128,415.40
  4. Step 4: Simplify right side
    443,948.20x = 85,514,678,523.42
  5. Step 5: Solve for x
    x = 85,514,678,523.42/443,948.20
  6. Step 6: Final answer
    x = 192,623.10

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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.