Home / 688,985,529.60-1,033,478,294.40-628,720,120.20

Finding the Fourth Proportional to 688,985,529.60, 1,033,478,294.40 and 628,720,120.20

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Solution

The fourth proportional to 688,985,529.60, 1,033,478,294.40 and 628,720,120.20 is: 943,080,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,985,529.60 : 1,033,478,294.40 = 628,720,120.20 : x
  2. Step 2: Convert to fraction form
    688,985,529.60/1,033,478,294.40 = 628,720,120.20/x
  3. Step 3: Cross multiply
    688,985,529.60x = 1,033,478,294.40 × 628,720,120.20
  4. Step 4: Simplify right side
    688,985,529.60x = 649,768,597,479,259,008
  5. Step 5: Solve for x
    x = 649,768,597,479,259,008/688,985,529.60
  6. Step 6: Final answer
    x = 943,080,180.30

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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.