Home / 513,208,012.20-768,111,407.10-472,393,343.40

Finding the Fourth Proportional to 513,208,012.20, 768,111,407.10 and 472,393,343.40

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Solution

The fourth proportional to 513,208,012.20, 768,111,407.10 and 472,393,343.40 is: 707,024,650.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,208,012.20 : 768,111,407.10 = 472,393,343.40 : x
  2. Step 2: Convert to fraction form
    513,208,012.20/768,111,407.10 = 472,393,343.40/x
  3. Step 3: Cross multiply
    513,208,012.20x = 768,111,407.10 × 472,393,343.40
  4. Step 4: Simplify right side
    513,208,012.20x = 362,850,715,703,647,488
  5. Step 5: Solve for x
    x = 362,850,715,703,647,488/513,208,012.20
  6. Step 6: Final answer
    x = 707,024,650.98

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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.