Home / 8,160,442,810.80-12,240,664,216.20-2,989,912,916.40

Finding the Fourth Proportional to 8,160,442,810.80, 12,240,664,216.20 and 2,989,912,916.40

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Solution

The fourth proportional to 8,160,442,810.80, 12,240,664,216.20 and 2,989,912,916.40 is: 4,484,869,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160,442,810.80 : 12,240,664,216.20 = 2,989,912,916.40 : x
  2. Step 2: Convert to fraction form
    8,160,442,810.80/12,240,664,216.20 = 2,989,912,916.40/x
  3. Step 3: Cross multiply
    8,160,442,810.80x = 12,240,664,216.20 × 2,989,912,916.40
  4. Step 4: Simplify right side
    8,160,442,810.80x = 36,598,520,045,331,664,896
  5. Step 5: Solve for x
    x = 36,598,520,045,331,664,896/8,160,442,810.80
  6. Step 6: Final answer
    x = 4,484,869,374.60

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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.