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Finding the Fourth Proportional to 472,396,348.80, 708,594,523.20 and 443,674,915.20

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Solution

The fourth proportional to 472,396,348.80, 708,594,523.20 and 443,674,915.20 is: 665,512,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,396,348.80 : 708,594,523.20 = 443,674,915.20 : x
  2. Step 2: Convert to fraction form
    472,396,348.80/708,594,523.20 = 443,674,915.20/x
  3. Step 3: Cross multiply
    472,396,348.80x = 708,594,523.20 × 443,674,915.20
  4. Step 4: Simplify right side
    472,396,348.80x = 314,385,614,991,944,448
  5. Step 5: Solve for x
    x = 314,385,614,991,944,448/472,396,348.80
  6. Step 6: Final answer
    x = 665,512,372.80

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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.