Home / 898,763,287.20-1,348,144,930.80-639,430,576.80

Finding the Fourth Proportional to 898,763,287.20, 1,348,144,930.80 and 639,430,576.80

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Solution

The fourth proportional to 898,763,287.20, 1,348,144,930.80 and 639,430,576.80 is: 959,145,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,763,287.20 : 1,348,144,930.80 = 639,430,576.80 : x
  2. Step 2: Convert to fraction form
    898,763,287.20/1,348,144,930.80 = 639,430,576.80/x
  3. Step 3: Cross multiply
    898,763,287.20x = 1,348,144,930.80 × 639,430,576.80
  4. Step 4: Simplify right side
    898,763,287.20x = 862,045,090,711,440,000
  5. Step 5: Solve for x
    x = 862,045,090,711,440,000/898,763,287.20
  6. Step 6: Final answer
    x = 959,145,865.20

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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.