Home / 686,594,689.20-1,029,892,033.80-611,347,892.40

Finding the Fourth Proportional to 686,594,689.20, 1,029,892,033.80 and 611,347,892.40

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Solution

The fourth proportional to 686,594,689.20, 1,029,892,033.80 and 611,347,892.40 is: 917,021,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,594,689.20 : 1,029,892,033.80 = 611,347,892.40 : x
  2. Step 2: Convert to fraction form
    686,594,689.20/1,029,892,033.80 = 611,347,892.40/x
  3. Step 3: Cross multiply
    686,594,689.20x = 1,029,892,033.80 × 611,347,892.40
  4. Step 4: Simplify right side
    686,594,689.20x = 629,622,324,263,179,520
  5. Step 5: Solve for x
    x = 629,622,324,263,179,520/686,594,689.20
  6. Step 6: Final answer
    x = 917,021,838.60

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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.