Home / 1,281,038,897.20-1,917,731,970.60-763,202,786.80

Finding the Fourth Proportional to 1,281,038,897.20, 1,917,731,970.60 and 763,202,786.80

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Solution

The fourth proportional to 1,281,038,897.20, 1,917,731,970.60 and 763,202,786.80 is: 1,142,524,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,038,897.20 : 1,917,731,970.60 = 763,202,786.80 : x
  2. Step 2: Convert to fraction form
    1,281,038,897.20/1,917,731,970.60 = 763,202,786.80/x
  3. Step 3: Cross multiply
    1,281,038,897.20x = 1,917,731,970.60 × 763,202,786.80
  4. Step 4: Simplify right side
    1,281,038,897.20x = 1,463,618,384,297,375,488
  5. Step 5: Solve for x
    x = 1,463,618,384,297,375,488/1,281,038,897.20
  6. Step 6: Final answer
    x = 1,142,524,545.90

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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.