Home / 472,392,511.20-708,588,766.80-299,355,321.60

Finding the Fourth Proportional to 472,392,511.20, 708,588,766.80 and 299,355,321.60

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Solution

The fourth proportional to 472,392,511.20, 708,588,766.80 and 299,355,321.60 is: 449,032,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,511.20 : 708,588,766.80 = 299,355,321.60 : x
  2. Step 2: Convert to fraction form
    472,392,511.20/708,588,766.80 = 299,355,321.60/x
  3. Step 3: Cross multiply
    472,392,511.20x = 708,588,766.80 × 299,355,321.60
  4. Step 4: Simplify right side
    472,392,511.20x = 212,119,818,167,561,408
  5. Step 5: Solve for x
    x = 212,119,818,167,561,408/472,392,511.20
  6. Step 6: Final answer
    x = 449,032,982.40

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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.