Home / 879,771,128.40-1,320,506,998.20-443,564,355.60

Finding the Fourth Proportional to 879,771,128.40, 1,320,506,998.20 and 443,564,355.60

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Solution

The fourth proportional to 879,771,128.40, 1,320,506,998.20 and 443,564,355.60 is: 665,775,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,771,128.40 : 1,320,506,998.20 = 443,564,355.60 : x
  2. Step 2: Convert to fraction form
    879,771,128.40/1,320,506,998.20 = 443,564,355.60/x
  3. Step 3: Cross multiply
    879,771,128.40x = 1,320,506,998.20 × 443,564,355.60
  4. Step 4: Simplify right side
    879,771,128.40x = 585,729,835,721,873,408
  5. Step 5: Solve for x
    x = 585,729,835,721,873,408/879,771,128.40
  6. Step 6: Final answer
    x = 665,775,241.78

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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.