Home / 1,179,936,004.60-1,769,904,006.90-812,603,985.40

Finding the Fourth Proportional to 1,179,936,004.60, 1,769,904,006.90 and 812,603,985.40

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Solution

The fourth proportional to 1,179,936,004.60, 1,769,904,006.90 and 812,603,985.40 is: 1,218,905,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,936,004.60 : 1,769,904,006.90 = 812,603,985.40 : x
  2. Step 2: Convert to fraction form
    1,179,936,004.60/1,769,904,006.90 = 812,603,985.40/x
  3. Step 3: Cross multiply
    1,179,936,004.60x = 1,769,904,006.90 × 812,603,985.40
  4. Step 4: Simplify right side
    1,179,936,004.60x = 1,438,231,049,782,369,024
  5. Step 5: Solve for x
    x = 1,438,231,049,782,369,024/1,179,936,004.60
  6. Step 6: Final answer
    x = 1,218,905,978.10

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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.