Home / 520,643,959.96-718,486,693.06-285,698,551.36

Finding the Fourth Proportional to 520,643,959.96, 718,486,693.06 and 285,698,551.36

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Solution

The fourth proportional to 520,643,959.96, 718,486,693.06 and 285,698,551.36 is: 394,262,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,643,959.96 : 718,486,693.06 = 285,698,551.36 : x
  2. Step 2: Convert to fraction form
    520,643,959.96/718,486,693.06 = 285,698,551.36/x
  3. Step 3: Cross multiply
    520,643,959.96x = 718,486,693.06 × 285,698,551.36
  4. Step 4: Simplify right side
    520,643,959.96x = 205,270,607,378,678,944
  5. Step 5: Solve for x
    x = 205,270,607,378,678,944/520,643,959.96
  6. Step 6: Final answer
    x = 394,262,918.93

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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.