Home / 1,391,994,334.32-1,920,962,174.36-756,910,275.28

Finding the Fourth Proportional to 1,391,994,334.32, 1,920,962,174.36 and 756,910,275.28

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Solution

The fourth proportional to 1,391,994,334.32, 1,920,962,174.36 and 756,910,275.28 is: 1,044,541,613.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,994,334.32 : 1,920,962,174.36 = 756,910,275.28 : x
  2. Step 2: Convert to fraction form
    1,391,994,334.32/1,920,962,174.36 = 756,910,275.28/x
  3. Step 3: Cross multiply
    1,391,994,334.32x = 1,920,962,174.36 × 756,910,275.28
  4. Step 4: Simplify right side
    1,391,994,334.32x = 1,453,996,008,197,294,848
  5. Step 5: Solve for x
    x = 1,453,996,008,197,294,848/1,391,994,334.32
  6. Step 6: Final answer
    x = 1,044,541,613.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.