Home / 19,920,191,568.30-29,880,287,352.45-5,198,212,986.30

Finding the Fourth Proportional to 19,920,191,568.30, 29,880,287,352.45 and 5,198,212,986.30

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Solution

The fourth proportional to 19,920,191,568.30, 29,880,287,352.45 and 5,198,212,986.30 is: 7,797,319,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920,191,568.30 : 29,880,287,352.45 = 5,198,212,986.30 : x
  2. Step 2: Convert to fraction form
    19,920,191,568.30/29,880,287,352.45 = 5,198,212,986.30/x
  3. Step 3: Cross multiply
    19,920,191,568.30x = 29,880,287,352.45 × 5,198,212,986.30
  4. Step 4: Simplify right side
    19,920,191,568.30x = 155,324,097,749,881,257,984
  5. Step 5: Solve for x
    x = 155,324,097,749,881,257,984/19,920,191,568.30
  6. Step 6: Final answer
    x = 7,797,319,479.45

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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.