Home / 28,257,725,615.20-42,386,588,422.80-8,628,389,346.40

Finding the Fourth Proportional to 28,257,725,615.20, 42,386,588,422.80 and 8,628,389,346.40

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Solution

The fourth proportional to 28,257,725,615.20, 42,386,588,422.80 and 8,628,389,346.40 is: 12,942,584,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257,725,615.20 : 42,386,588,422.80 = 8,628,389,346.40 : x
  2. Step 2: Convert to fraction form
    28,257,725,615.20/42,386,588,422.80 = 8,628,389,346.40/x
  3. Step 3: Cross multiply
    28,257,725,615.20x = 42,386,588,422.80 × 8,628,389,346.40
  4. Step 4: Simplify right side
    28,257,725,615.20x = 365,727,987,977,529,131,008
  5. Step 5: Solve for x
    x = 365,727,987,977,529,131,008/28,257,725,615.20
  6. Step 6: Final answer
    x = 12,942,584,019.60

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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.