Home / 520,643,788.14-718,486,456.56-285,698,380.34

Finding the Fourth Proportional to 520,643,788.14, 718,486,456.56 and 285,698,380.34

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Solution

The fourth proportional to 520,643,788.14, 718,486,456.56 and 285,698,380.34 is: 394,262,683.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,643,788.14 : 718,486,456.56 = 285,698,380.34 : x
  2. Step 2: Convert to fraction form
    520,643,788.14/718,486,456.56 = 285,698,380.34/x
  3. Step 3: Cross multiply
    520,643,788.14x = 718,486,456.56 × 285,698,380.34
  4. Step 4: Simplify right side
    520,643,788.14x = 205,270,416,935,417,728
  5. Step 5: Solve for x
    x = 205,270,416,935,417,728/520,643,788.14
  6. Step 6: Final answer
    x = 394,262,683.26

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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.