Home / 431,665,415.60-647,498,123.40-386,315,783.60

Finding the Fourth Proportional to 431,665,415.60, 647,498,123.40 and 386,315,783.60

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Solution

The fourth proportional to 431,665,415.60, 647,498,123.40 and 386,315,783.60 is: 579,473,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,665,415.60 : 647,498,123.40 = 386,315,783.60 : x
  2. Step 2: Convert to fraction form
    431,665,415.60/647,498,123.40 = 386,315,783.60/x
  3. Step 3: Cross multiply
    431,665,415.60x = 647,498,123.40 × 386,315,783.60
  4. Step 4: Simplify right side
    431,665,415.60x = 250,138,744,920,800,512
  5. Step 5: Solve for x
    x = 250,138,744,920,800,512/431,665,415.60
  6. Step 6: Final answer
    x = 579,473,675.40

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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.