Home / 1,390,936,000.80-2,086,404,001.20-982,789,312.80

Finding the Fourth Proportional to 1,390,936,000.80, 2,086,404,001.20 and 982,789,312.80

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Solution

The fourth proportional to 1,390,936,000.80, 2,086,404,001.20 and 982,789,312.80 is: 1,474,183,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,936,000.80 : 2,086,404,001.20 = 982,789,312.80 : x
  2. Step 2: Convert to fraction form
    1,390,936,000.80/2,086,404,001.20 = 982,789,312.80/x
  3. Step 3: Cross multiply
    1,390,936,000.80x = 2,086,404,001.20 × 982,789,312.80
  4. Step 4: Simplify right side
    1,390,936,000.80x = 2,050,495,554,562,518,272
  5. Step 5: Solve for x
    x = 2,050,495,554,562,518,272/1,390,936,000.80
  6. Step 6: Final answer
    x = 1,474,183,969.20

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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.