Home / 407,913,720.90-611,869,815.81-127,816,077.30

Finding the Fourth Proportional to 407,913,720.90, 611,869,815.81 and 127,816,077.30

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Solution

The fourth proportional to 407,913,720.90, 611,869,815.81 and 127,816,077.30 is: 191,723,876.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,913,720.90 : 611,869,815.81 = 127,816,077.30 : x
  2. Step 2: Convert to fraction form
    407,913,720.90/611,869,815.81 = 127,816,077.30/x
  3. Step 3: Cross multiply
    407,913,720.90x = 611,869,815.81 × 127,816,077.30
  4. Step 4: Simplify right side
    407,913,720.90x = 78,206,799,675,107,712
  5. Step 5: Solve for x
    x = 78,206,799,675,107,712/407,913,720.90
  6. Step 6: Final answer
    x = 191,723,876.07

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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.