Home / 12,586,764,846.60-18,880,147,269.90-7,689,004,590.60

Finding the Fourth Proportional to 12,586,764,846.60, 18,880,147,269.90 and 7,689,004,590.60

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Solution

The fourth proportional to 12,586,764,846.60, 18,880,147,269.90 and 7,689,004,590.60 is: 11,533,506,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586,764,846.60 : 18,880,147,269.90 = 7,689,004,590.60 : x
  2. Step 2: Convert to fraction form
    12,586,764,846.60/18,880,147,269.90 = 7,689,004,590.60/x
  3. Step 3: Cross multiply
    12,586,764,846.60x = 18,880,147,269.90 × 7,689,004,590.60
  4. Step 4: Simplify right side
    12,586,764,846.60x = 145,169,539,029,465,169,920
  5. Step 5: Solve for x
    x = 145,169,539,029,465,169,920/12,586,764,846.60
  6. Step 6: Final answer
    x = 11,533,506,885.90

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Double scale
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1.5x scale

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.