Home / 387,101,421.60-580,652,132.40-258,106,912.80

Finding the Fourth Proportional to 387,101,421.60, 580,652,132.40 and 258,106,912.80

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Solution

The fourth proportional to 387,101,421.60, 580,652,132.40 and 258,106,912.80 is: 387,160,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,101,421.60 : 580,652,132.40 = 258,106,912.80 : x
  2. Step 2: Convert to fraction form
    387,101,421.60/580,652,132.40 = 258,106,912.80/x
  3. Step 3: Cross multiply
    387,101,421.60x = 580,652,132.40 × 258,106,912.80
  4. Step 4: Simplify right side
    387,101,421.60x = 149,870,329,304,500,864
  5. Step 5: Solve for x
    x = 149,870,329,304,500,864/387,101,421.60
  6. Step 6: Final answer
    x = 387,160,369.20

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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.