Home / 891,603,391.20-1,337,405,086.80-478,354,869.60

Finding the Fourth Proportional to 891,603,391.20, 1,337,405,086.80 and 478,354,869.60

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Solution

The fourth proportional to 891,603,391.20, 1,337,405,086.80 and 478,354,869.60 is: 717,532,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,603,391.20 : 1,337,405,086.80 = 478,354,869.60 : x
  2. Step 2: Convert to fraction form
    891,603,391.20/1,337,405,086.80 = 478,354,869.60/x
  3. Step 3: Cross multiply
    891,603,391.20x = 1,337,405,086.80 × 478,354,869.60
  4. Step 4: Simplify right side
    891,603,391.20x = 639,754,235,898,590,720
  5. Step 5: Solve for x
    x = 639,754,235,898,590,720/891,603,391.20
  6. Step 6: Final answer
    x = 717,532,304.40

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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.