Home / 689,928,277,777.80-1,034,892,416,666.70-421,748,693,982.60

Finding the Fourth Proportional to 689,928,277,777.80, 1,034,892,416,666.70 and 421,748,693,982.60

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Solution

The fourth proportional to 689,928,277,777.80, 1,034,892,416,666.70 and 421,748,693,982.60 is: 632,623,040,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,928,277,777.80 : 1,034,892,416,666.70 = 421,748,693,982.60 : x
  2. Step 2: Convert to fraction form
    689,928,277,777.80/1,034,892,416,666.70 = 421,748,693,982.60/x
  3. Step 3: Cross multiply
    689,928,277,777.80x = 1,034,892,416,666.70 × 421,748,693,982.60
  4. Step 4: Simplify right side
    689,928,277,777.80x = 436,464,525,141,677,401,178,112
  5. Step 5: Solve for x
    x = 436,464,525,141,677,401,178,112/689,928,277,777.80
  6. Step 6: Final answer
    x = 632,623,040,973.90

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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.