Home / 386,857,376.40-580,286,064.60-257,044,054.80

Finding the Fourth Proportional to 386,857,376.40, 580,286,064.60 and 257,044,054.80

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Solution

The fourth proportional to 386,857,376.40, 580,286,064.60 and 257,044,054.80 is: 385,566,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,857,376.40 : 580,286,064.60 = 257,044,054.80 : x
  2. Step 2: Convert to fraction form
    386,857,376.40/580,286,064.60 = 257,044,054.80/x
  3. Step 3: Cross multiply
    386,857,376.40x = 580,286,064.60 × 257,044,054.80
  4. Step 4: Simplify right side
    386,857,376.40x = 149,159,082,988,718,752
  5. Step 5: Solve for x
    x = 149,159,082,988,718,752/386,857,376.40
  6. Step 6: Final answer
    x = 385,566,082.20

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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.