Home / 387,124,126.56-581,348,938.32-258,557,919.84

Finding the Fourth Proportional to 387,124,126.56, 581,348,938.32 and 258,557,919.84

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Solution

The fourth proportional to 387,124,126.56, 581,348,938.32 and 258,557,919.84 is: 388,279,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,124,126.56 : 581,348,938.32 = 258,557,919.84 : x
  2. Step 2: Convert to fraction form
    387,124,126.56/581,348,938.32 = 258,557,919.84/x
  3. Step 3: Cross multiply
    387,124,126.56x = 581,348,938.32 × 258,557,919.84
  4. Step 4: Simplify right side
    387,124,126.56x = 150,312,372,193,211,680
  5. Step 5: Solve for x
    x = 150,312,372,193,211,680/387,124,126.56
  6. Step 6: Final answer
    x = 388,279,525.56

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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.