Home / 814,640,687.60-1,221,961,031.40-297,088,012.40

Finding the Fourth Proportional to 814,640,687.60, 1,221,961,031.40 and 297,088,012.40

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Solution

The fourth proportional to 814,640,687.60, 1,221,961,031.40 and 297,088,012.40 is: 445,632,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,640,687.60 : 1,221,961,031.40 = 297,088,012.40 : x
  2. Step 2: Convert to fraction form
    814,640,687.60/1,221,961,031.40 = 297,088,012.40/x
  3. Step 3: Cross multiply
    814,640,687.60x = 1,221,961,031.40 × 297,088,012.40
  4. Step 4: Simplify right side
    814,640,687.60x = 363,029,974,048,880,000
  5. Step 5: Solve for x
    x = 363,029,974,048,880,000/814,640,687.60
  6. Step 6: Final answer
    x = 445,632,018.60

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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.