Home / 800,814,648.70-1,201,221,973.05-628,821,970.30

Finding the Fourth Proportional to 800,814,648.70, 1,201,221,973.05 and 628,821,970.30

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Solution

The fourth proportional to 800,814,648.70, 1,201,221,973.05 and 628,821,970.30 is: 943,232,955.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,814,648.70 : 1,201,221,973.05 = 628,821,970.30 : x
  2. Step 2: Convert to fraction form
    800,814,648.70/1,201,221,973.05 = 628,821,970.30/x
  3. Step 3: Cross multiply
    800,814,648.70x = 1,201,221,973.05 × 628,821,970.30
  4. Step 4: Simplify right side
    800,814,648.70x = 755,354,767,860,954,368
  5. Step 5: Solve for x
    x = 755,354,767,860,954,368/800,814,648.70
  6. Step 6: Final answer
    x = 943,232,955.45

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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.