Home / 520,903,134.60-718,819,927.20-309,219,013.59

Finding the Fourth Proportional to 520,903,134.60, 718,819,927.20 and 309,219,013.59

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Solution

The fourth proportional to 520,903,134.60, 718,819,927.20 and 309,219,013.59 is: 426,706,568.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,903,134.60 : 718,819,927.20 = 309,219,013.59 : x
  2. Step 2: Convert to fraction form
    520,903,134.60/718,819,927.20 = 309,219,013.59/x
  3. Step 3: Cross multiply
    520,903,134.60x = 718,819,927.20 × 309,219,013.59
  4. Step 4: Simplify right side
    520,903,134.60x = 222,272,788,837,619,616
  5. Step 5: Solve for x
    x = 222,272,788,837,619,616/520,903,134.60
  6. Step 6: Final answer
    x = 426,706,568.02

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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.