Home / 919,641,487.65-1,380,071,488.56-505,407,585.66

Finding the Fourth Proportional to 919,641,487.65, 1,380,071,488.56 and 505,407,585.66

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Solution

The fourth proportional to 919,641,487.65, 1,380,071,488.56 and 505,407,585.66 is: 758,446,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,641,487.65 : 1,380,071,488.56 = 505,407,585.66 : x
  2. Step 2: Convert to fraction form
    919,641,487.65/1,380,071,488.56 = 505,407,585.66/x
  3. Step 3: Cross multiply
    919,641,487.65x = 1,380,071,488.56 × 505,407,585.66
  4. Step 4: Simplify right side
    919,641,487.65x = 697,498,599,071,311,872
  5. Step 5: Solve for x
    x = 697,498,599,071,311,872/919,641,487.65
  6. Step 6: Final answer
    x = 758,446,208.05

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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.