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Finding the Fourth Proportional to 3,129,174,217.40, 4,387,293,629.80 and 3,129,174,217.40

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Solution

The fourth proportional to 3,129,174,217.40, 4,387,293,629.80 and 3,129,174,217.40 is: 4,387,293,629.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129,174,217.40 : 4,387,293,629.80 = 3,129,174,217.40 : x
  2. Step 2: Convert to fraction form
    3,129,174,217.40/4,387,293,629.80 = 3,129,174,217.40/x
  3. Step 3: Cross multiply
    3,129,174,217.40x = 4,387,293,629.80 × 3,129,174,217.40
  4. Step 4: Simplify right side
    3,129,174,217.40x = 13,728,606,110,533,421,056
  5. Step 5: Solve for x
    x = 13,728,606,110,533,421,056/3,129,174,217.40
  6. Step 6: Final answer
    x = 4,387,293,629.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.