Home / 1,320,341,714.20-1,980,512,571.30-861,176,690.20

Finding the Fourth Proportional to 1,320,341,714.20, 1,980,512,571.30 and 861,176,690.20

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Solution

The fourth proportional to 1,320,341,714.20, 1,980,512,571.30 and 861,176,690.20 is: 1,291,765,035.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,341,714.20 : 1,980,512,571.30 = 861,176,690.20 : x
  2. Step 2: Convert to fraction form
    1,320,341,714.20/1,980,512,571.30 = 861,176,690.20/x
  3. Step 3: Cross multiply
    1,320,341,714.20x = 1,980,512,571.30 × 861,176,690.20
  4. Step 4: Simplify right side
    1,320,341,714.20x = 1,705,571,261,051,625,472
  5. Step 5: Solve for x
    x = 1,705,571,261,051,625,472/1,320,341,714.20
  6. Step 6: Final answer
    x = 1,291,765,035.30

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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.