Home / 520,903,132.73-718,819,924.61-309,219,011.72

Finding the Fourth Proportional to 520,903,132.73, 718,819,924.61 and 309,219,011.72

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Solution

The fourth proportional to 520,903,132.73, 718,819,924.61 and 309,219,011.72 is: 426,706,565.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,903,132.73 : 718,819,924.61 = 309,219,011.72 : x
  2. Step 2: Convert to fraction form
    520,903,132.73/718,819,924.61 = 309,219,011.72/x
  3. Step 3: Cross multiply
    520,903,132.73x = 718,819,924.61 × 309,219,011.72
  4. Step 4: Simplify right side
    520,903,132.73x = 222,272,786,689,728,032
  5. Step 5: Solve for x
    x = 222,272,786,689,728,032/520,903,132.73
  6. Step 6: Final answer
    x = 426,706,565.44

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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.