Home / 520,643,956.96-718,486,688.92-285,698,548.36

Finding the Fourth Proportional to 520,643,956.96, 718,486,688.92 and 285,698,548.36

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Solution

The fourth proportional to 520,643,956.96, 718,486,688.92 and 285,698,548.36 is: 394,262,914.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,643,956.96 : 718,486,688.92 = 285,698,548.36 : x
  2. Step 2: Convert to fraction form
    520,643,956.96/718,486,688.92 = 285,698,548.36/x
  3. Step 3: Cross multiply
    520,643,956.96x = 718,486,688.92 × 285,698,548.36
  4. Step 4: Simplify right side
    520,643,956.96x = 205,270,604,040,426,880
  5. Step 5: Solve for x
    x = 205,270,604,040,426,880/520,643,956.96
  6. Step 6: Final answer
    x = 394,262,914.79

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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.