Home / 919,378,772.20-1,379,740,004.70-647,280,980.20

Finding the Fourth Proportional to 919,378,772.20, 1,379,740,004.70 and 647,280,980.20

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Solution

The fourth proportional to 919,378,772.20, 1,379,740,004.70 and 647,280,980.20 is: 971,394,478.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,378,772.20 : 1,379,740,004.70 = 647,280,980.20 : x
  2. Step 2: Convert to fraction form
    919,378,772.20/1,379,740,004.70 = 647,280,980.20/x
  3. Step 3: Cross multiply
    919,378,772.20x = 1,379,740,004.70 × 647,280,980.20
  4. Step 4: Simplify right side
    919,378,772.20x = 893,079,462,663,368,704
  5. Step 5: Solve for x
    x = 893,079,462,663,368,704/919,378,772.20
  6. Step 6: Final answer
    x = 971,394,478.17

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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.