Home / 667,900,867.61-921,599,254.22-381,788,309.40

Finding the Fourth Proportional to 667,900,867.61, 921,599,254.22 and 381,788,309.40

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Solution

The fourth proportional to 667,900,867.61, 921,599,254.22 and 381,788,309.40 is: 526,808,450.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,900,867.61 : 921,599,254.22 = 381,788,309.40 : x
  2. Step 2: Convert to fraction form
    667,900,867.61/921,599,254.22 = 381,788,309.40/x
  3. Step 3: Cross multiply
    667,900,867.61x = 921,599,254.22 × 381,788,309.40
  4. Step 4: Simplify right side
    667,900,867.61x = 351,855,821,211,045,696
  5. Step 5: Solve for x
    x = 351,855,821,211,045,696/667,900,867.61
  6. Step 6: Final answer
    x = 526,808,450.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.