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Finding the Fourth Proportional to 12,912,051,821.60, 19,337,466,730.80 and 12,912,051,821.60

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Solution

The fourth proportional to 12,912,051,821.60, 19,337,466,730.80 and 12,912,051,821.60 is: 19,337,466,730.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912,051,821.60 : 19,337,466,730.80 = 12,912,051,821.60 : x
  2. Step 2: Convert to fraction form
    12,912,051,821.60/19,337,466,730.80 = 12,912,051,821.60/x
  3. Step 3: Cross multiply
    12,912,051,821.60x = 19,337,466,730.80 × 12,912,051,821.60
  4. Step 4: Simplify right side
    12,912,051,821.60x = 249,686,372,526,555,529,216
  5. Step 5: Solve for x
    x = 249,686,372,526,555,529,216/12,912,051,821.60
  6. Step 6: Final answer
    x = 19,337,466,730.80

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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.