Home / 1,348,326,658.40-2,022,489,987.60-428,295,999.20

Finding the Fourth Proportional to 1,348,326,658.40, 2,022,489,987.60 and 428,295,999.20

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Solution

The fourth proportional to 1,348,326,658.40, 2,022,489,987.60 and 428,295,999.20 is: 642,443,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348,326,658.40 : 2,022,489,987.60 = 428,295,999.20 : x
  2. Step 2: Convert to fraction form
    1,348,326,658.40/2,022,489,987.60 = 428,295,999.20/x
  3. Step 3: Cross multiply
    1,348,326,658.40x = 2,022,489,987.60 × 428,295,999.20
  4. Step 4: Simplify right side
    1,348,326,658.40x = 866,224,370,111,137,536
  5. Step 5: Solve for x
    x = 866,224,370,111,137,536/1,348,326,658.40
  6. Step 6: Final answer
    x = 642,443,998.80

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Double scale
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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.