Home / 813,067,838.08-1,219,628,071.18-387,064,068.28

Finding the Fourth Proportional to 813,067,838.08, 1,219,628,071.18 and 387,064,068.28

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Solution

The fourth proportional to 813,067,838.08, 1,219,628,071.18 and 387,064,068.28 is: 580,608,629.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,067,838.08 : 1,219,628,071.18 = 387,064,068.28 : x
  2. Step 2: Convert to fraction form
    813,067,838.08/1,219,628,071.18 = 387,064,068.28/x
  3. Step 3: Cross multiply
    813,067,838.08x = 1,219,628,071.18 × 387,064,068.28
  4. Step 4: Simplify right side
    813,067,838.08x = 472,074,203,019,420,224
  5. Step 5: Solve for x
    x = 472,074,203,019,420,224/813,067,838.08
  6. Step 6: Final answer
    x = 580,608,629.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.