Home / 787,328,001.40-1,180,992,002.10-419,995,982.20

Finding the Fourth Proportional to 787,328,001.40, 1,180,992,002.10 and 419,995,982.20

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Solution

The fourth proportional to 787,328,001.40, 1,180,992,002.10 and 419,995,982.20 is: 629,993,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,328,001.40 : 1,180,992,002.10 = 419,995,982.20 : x
  2. Step 2: Convert to fraction form
    787,328,001.40/1,180,992,002.10 = 419,995,982.20/x
  3. Step 3: Cross multiply
    787,328,001.40x = 1,180,992,002.10 × 419,995,982.20
  4. Step 4: Simplify right side
    787,328,001.40x = 496,011,895,892,333,888
  5. Step 5: Solve for x
    x = 496,011,895,892,333,888/787,328,001.40
  6. Step 6: Final answer
    x = 629,993,973.30

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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.