Home / 425,917,069.20-638,434,704.60-231,417,536.40

Finding the Fourth Proportional to 425,917,069.20, 638,434,704.60 and 231,417,536.40

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Solution

The fourth proportional to 425,917,069.20, 638,434,704.60 and 231,417,536.40 is: 346,886,746.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,917,069.20 : 638,434,704.60 = 231,417,536.40 : x
  2. Step 2: Convert to fraction form
    425,917,069.20/638,434,704.60 = 231,417,536.40/x
  3. Step 3: Cross multiply
    425,917,069.20x = 638,434,704.60 × 231,417,536.40
  4. Step 4: Simplify right side
    425,917,069.20x = 147,744,986,490,793,760
  5. Step 5: Solve for x
    x = 147,744,986,490,793,760/425,917,069.20
  6. Step 6: Final answer
    x = 346,886,746.68

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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.