Home / 879,771,205.40-1,320,507,113.70-443,564,432.60

Finding the Fourth Proportional to 879,771,205.40, 1,320,507,113.70 and 443,564,432.60

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Solution

The fourth proportional to 879,771,205.40, 1,320,507,113.70 and 443,564,432.60 is: 665,775,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,771,205.40 : 1,320,507,113.70 = 443,564,432.60 : x
  2. Step 2: Convert to fraction form
    879,771,205.40/1,320,507,113.70 = 443,564,432.60/x
  3. Step 3: Cross multiply
    879,771,205.40x = 1,320,507,113.70 × 443,564,432.60
  4. Step 4: Simplify right side
    879,771,205.40x = 585,729,988,632,604,288
  5. Step 5: Solve for x
    x = 585,729,988,632,604,288/879,771,205.40
  6. Step 6: Final answer
    x = 665,775,357.32

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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.