Home / 345,708,015.80-518,562,023.70-285,988,335.80

Finding the Fourth Proportional to 345,708,015.80, 518,562,023.70 and 285,988,335.80

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Solution

The fourth proportional to 345,708,015.80, 518,562,023.70 and 285,988,335.80 is: 428,982,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,708,015.80 : 518,562,023.70 = 285,988,335.80 : x
  2. Step 2: Convert to fraction form
    345,708,015.80/518,562,023.70 = 285,988,335.80/x
  3. Step 3: Cross multiply
    345,708,015.80x = 518,562,023.70 × 285,988,335.80
  4. Step 4: Simplify right side
    345,708,015.80x = 148,302,690,167,043,168
  5. Step 5: Solve for x
    x = 148,302,690,167,043,168/345,708,015.80
  6. Step 6: Final answer
    x = 428,982,503.70

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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.