Home / 386,071,047.90-578,621,881.04-208,801,122.75

Finding the Fourth Proportional to 386,071,047.90, 578,621,881.04 and 208,801,122.75

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Solution

The fourth proportional to 386,071,047.90, 578,621,881.04 and 208,801,122.75 is: 312,939,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,071,047.90 : 578,621,881.04 = 208,801,122.75 : x
  2. Step 2: Convert to fraction form
    386,071,047.90/578,621,881.04 = 208,801,122.75/x
  3. Step 3: Cross multiply
    386,071,047.90x = 578,621,881.04 × 208,801,122.75
  4. Step 4: Simplify right side
    386,071,047.90x = 120,816,898,407,824,928
  5. Step 5: Solve for x
    x = 120,816,898,407,824,928/386,071,047.90
  6. Step 6: Final answer
    x = 312,939,545.88

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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.