Home / 498,998,647.78-688,590,238.79-272,892,977.75

Finding the Fourth Proportional to 498,998,647.78, 688,590,238.79 and 272,892,977.75

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Solution

The fourth proportional to 498,998,647.78, 688,590,238.79 and 272,892,977.75 is: 376,577,053.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,998,647.78 : 688,590,238.79 = 272,892,977.75 : x
  2. Step 2: Convert to fraction form
    498,998,647.78/688,590,238.79 = 272,892,977.75/x
  3. Step 3: Cross multiply
    498,998,647.78x = 688,590,238.79 × 272,892,977.75
  4. Step 4: Simplify right side
    498,998,647.78x = 187,911,440,715,390,368
  5. Step 5: Solve for x
    x = 187,911,440,715,390,368/498,998,647.78
  6. Step 6: Final answer
    x = 376,577,053.97

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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.