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Finding the Fourth Proportional to 979,798,531.20, 1,469,697,796.80 and 972,996,086.40

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Solution

The fourth proportional to 979,798,531.20, 1,469,697,796.80 and 972,996,086.40 is: 1,459,494,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,798,531.20 : 1,469,697,796.80 = 972,996,086.40 : x
  2. Step 2: Convert to fraction form
    979,798,531.20/1,469,697,796.80 = 972,996,086.40/x
  3. Step 3: Cross multiply
    979,798,531.20x = 1,469,697,796.80 × 972,996,086.40
  4. Step 4: Simplify right side
    979,798,531.20x = 1,430,010,204,477,102,336
  5. Step 5: Solve for x
    x = 1,430,010,204,477,102,336/979,798,531.20
  6. Step 6: Final answer
    x = 1,459,494,129.60

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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.