Home / 1,122,210,000.40-1,683,315,000.60-345,786,509.20

Finding the Fourth Proportional to 1,122,210,000.40, 1,683,315,000.60 and 345,786,509.20

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Solution

The fourth proportional to 1,122,210,000.40, 1,683,315,000.60 and 345,786,509.20 is: 518,679,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,210,000.40 : 1,683,315,000.60 = 345,786,509.20 : x
  2. Step 2: Convert to fraction form
    1,122,210,000.40/1,683,315,000.60 = 345,786,509.20/x
  3. Step 3: Cross multiply
    1,122,210,000.40x = 1,683,315,000.60 × 345,786,509.20
  4. Step 4: Simplify right side
    1,122,210,000.40x = 582,067,617,941,469,824
  5. Step 5: Solve for x
    x = 582,067,617,941,469,824/1,122,210,000.40
  6. Step 6: Final answer
    x = 518,679,763.80

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Double scale
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Similar ratio
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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.