Home / 858,836,490.30-1,288,254,735.54-398,621,706.30

Finding the Fourth Proportional to 858,836,490.30, 1,288,254,735.54 and 398,621,706.30

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Solution

The fourth proportional to 858,836,490.30, 1,288,254,735.54 and 398,621,706.30 is: 597,932,559.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,836,490.30 : 1,288,254,735.54 = 398,621,706.30 : x
  2. Step 2: Convert to fraction form
    858,836,490.30/1,288,254,735.54 = 398,621,706.30/x
  3. Step 3: Cross multiply
    858,836,490.30x = 1,288,254,735.54 × 398,621,706.30
  4. Step 4: Simplify right side
    858,836,490.30x = 513,526,300,830,010,048
  5. Step 5: Solve for x
    x = 513,526,300,830,010,048/858,836,490.30
  6. Step 6: Final answer
    x = 597,932,559.49

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1.5x scale

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.