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Finding the Fourth Proportional to 487,978,292.42, 673,403,154.62 and 276,279,664.01

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Solution

The fourth proportional to 487,978,292.42, 673,403,154.62 and 276,279,664.01 is: 381,262,036.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,978,292.42 : 673,403,154.62 = 276,279,664.01 : x
  2. Step 2: Convert to fraction form
    487,978,292.42/673,403,154.62 = 276,279,664.01/x
  3. Step 3: Cross multiply
    487,978,292.42x = 673,403,154.62 × 276,279,664.01
  4. Step 4: Simplify right side
    487,978,292.42x = 186,047,597,296,939,264
  5. Step 5: Solve for x
    x = 186,047,597,296,939,264/487,978,292.42
  6. Step 6: Final answer
    x = 381,262,036.01

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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.