Home / 638,842,021.83-881,604,646.79-345,486,589.83

Finding the Fourth Proportional to 638,842,021.83, 881,604,646.79 and 345,486,589.83

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Solution

The fourth proportional to 638,842,021.83, 881,604,646.79 and 345,486,589.83 is: 476,772,930.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,842,021.83 : 881,604,646.79 = 345,486,589.83 : x
  2. Step 2: Convert to fraction form
    638,842,021.83/881,604,646.79 = 345,486,589.83/x
  3. Step 3: Cross multiply
    638,842,021.83x = 881,604,646.79 × 345,486,589.83
  4. Step 4: Simplify right side
    638,842,021.83x = 304,582,582,996,031,296
  5. Step 5: Solve for x
    x = 304,582,582,996,031,296/638,842,021.83
  6. Step 6: Final answer
    x = 476,772,930.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.