Home / 1,262,391,128.80-1,892,243,000.40-485,736,690.40

Finding the Fourth Proportional to 1,262,391,128.80, 1,892,243,000.40 and 485,736,690.40

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Solution

The fourth proportional to 1,262,391,128.80, 1,892,243,000.40 and 485,736,690.40 is: 728,088,016.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,391,128.80 : 1,892,243,000.40 = 485,736,690.40 : x
  2. Step 2: Convert to fraction form
    1,262,391,128.80/1,892,243,000.40 = 485,736,690.40/x
  3. Step 3: Cross multiply
    1,262,391,128.80x = 1,892,243,000.40 × 485,736,690.40
  4. Step 4: Simplify right side
    1,262,391,128.80x = 919,131,852,446,861,824
  5. Step 5: Solve for x
    x = 919,131,852,446,861,824/1,262,391,128.80
  6. Step 6: Final answer
    x = 728,088,016.05

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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.