Home / 386,071,046.15-578,621,878.42-208,801,121

Finding the Fourth Proportional to 386,071,046.15, 578,621,878.42 and 208,801,121

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Solution

The fourth proportional to 386,071,046.15, 578,621,878.42 and 208,801,121 is: 312,939,543.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,071,046.15 : 578,621,878.42 = 208,801,121 : x
  2. Step 2: Convert to fraction form
    386,071,046.15/578,621,878.42 = 208,801,121/x
  3. Step 3: Cross multiply
    386,071,046.15x = 578,621,878.42 × 208,801,121
  4. Step 4: Simplify right side
    386,071,046.15x = 120,816,896,848,177,696
  5. Step 5: Solve for x
    x = 120,816,896,848,177,696/386,071,046.15
  6. Step 6: Final answer
    x = 312,939,543.26

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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.