Home / 391,440,005.20-587,160,007.80-262,445,496.40

Finding the Fourth Proportional to 391,440,005.20, 587,160,007.80 and 262,445,496.40

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Solution

The fourth proportional to 391,440,005.20, 587,160,007.80 and 262,445,496.40 is: 393,668,244.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,440,005.20 : 587,160,007.80 = 262,445,496.40 : x
  2. Step 2: Convert to fraction form
    391,440,005.20/587,160,007.80 = 262,445,496.40/x
  3. Step 3: Cross multiply
    391,440,005.20x = 587,160,007.80 × 262,445,496.40
  4. Step 4: Simplify right side
    391,440,005.20x = 154,097,499,713,298,848
  5. Step 5: Solve for x
    x = 154,097,499,713,298,848/391,440,005.20
  6. Step 6: Final answer
    x = 393,668,244.60

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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.