Home / 386,071,046.40-578,621,878.79-208,801,121.25

Finding the Fourth Proportional to 386,071,046.40, 578,621,878.79 and 208,801,121.25

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Solution

The fourth proportional to 386,071,046.40, 578,621,878.79 and 208,801,121.25 is: 312,939,543.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,071,046.40 : 578,621,878.79 = 208,801,121.25 : x
  2. Step 2: Convert to fraction form
    386,071,046.40/578,621,878.79 = 208,801,121.25/x
  3. Step 3: Cross multiply
    386,071,046.40x = 578,621,878.79 × 208,801,121.25
  4. Step 4: Simplify right side
    386,071,046.40x = 120,816,897,071,655,600
  5. Step 5: Solve for x
    x = 120,816,897,071,655,600/386,071,046.40
  6. Step 6: Final answer
    x = 312,939,543.64

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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.