Home / 810,119,880.75-1,118,145,285.70-492,512,639.25

Finding the Fourth Proportional to 810,119,880.75, 1,118,145,285.70 and 492,512,639.25

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Solution

The fourth proportional to 810,119,880.75, 1,118,145,285.70 and 492,512,639.25 is: 679,776,782.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,119,880.75 : 1,118,145,285.70 = 492,512,639.25 : x
  2. Step 2: Convert to fraction form
    810,119,880.75/1,118,145,285.70 = 492,512,639.25/x
  3. Step 3: Cross multiply
    810,119,880.75x = 1,118,145,285.70 × 492,512,639.25
  4. Step 4: Simplify right side
    810,119,880.75x = 550,700,685,720,620,224
  5. Step 5: Solve for x
    x = 550,700,685,720,620,224/810,119,880.75
  6. Step 6: Final answer
    x = 679,776,782.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.