Home / 838,858,467.20-1,258,287,700.80-512,341,116.80

Finding the Fourth Proportional to 838,858,467.20, 1,258,287,700.80 and 512,341,116.80

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Solution

The fourth proportional to 838,858,467.20, 1,258,287,700.80 and 512,341,116.80 is: 768,511,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,858,467.20 : 1,258,287,700.80 = 512,341,116.80 : x
  2. Step 2: Convert to fraction form
    838,858,467.20/1,258,287,700.80 = 512,341,116.80/x
  3. Step 3: Cross multiply
    838,858,467.20x = 1,258,287,700.80 × 512,341,116.80
  4. Step 4: Simplify right side
    838,858,467.20x = 644,672,525,883,576,192
  5. Step 5: Solve for x
    x = 644,672,525,883,576,192/838,858,467.20
  6. Step 6: Final answer
    x = 768,511,675.20

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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.