Home / 520,989,943.60-718,967,536.86-286,055,821

Finding the Fourth Proportional to 520,989,943.60, 718,967,536.86 and 286,055,821

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Solution

The fourth proportional to 520,989,943.60, 718,967,536.86 and 286,055,821 is: 394,757,809.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,989,943.60 : 718,967,536.86 = 286,055,821 : x
  2. Step 2: Convert to fraction form
    520,989,943.60/718,967,536.86 = 286,055,821/x
  3. Step 3: Cross multiply
    520,989,943.60x = 718,967,536.86 × 286,055,821
  4. Step 4: Simplify right side
    520,989,943.60x = 205,664,849,028,835,072
  5. Step 5: Solve for x
    x = 205,664,849,028,835,072/520,989,943.60
  6. Step 6: Final answer
    x = 394,757,809.73

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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.