Home / 511,213,835.40-766,820,753.10-448,078,644.60

Finding the Fourth Proportional to 511,213,835.40, 766,820,753.10 and 448,078,644.60

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Solution

The fourth proportional to 511,213,835.40, 766,820,753.10 and 448,078,644.60 is: 672,117,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,213,835.40 : 766,820,753.10 = 448,078,644.60 : x
  2. Step 2: Convert to fraction form
    511,213,835.40/766,820,753.10 = 448,078,644.60/x
  3. Step 3: Cross multiply
    511,213,835.40x = 766,820,753.10 × 448,078,644.60
  4. Step 4: Simplify right side
    511,213,835.40x = 343,596,003,700,199,296
  5. Step 5: Solve for x
    x = 343,596,003,700,199,296/511,213,835.40
  6. Step 6: Final answer
    x = 672,117,966.90

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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.