Home / 667,900,866.11-921,599,252.15-381,788,307.90

Finding the Fourth Proportional to 667,900,866.11, 921,599,252.15 and 381,788,307.90

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Solution

The fourth proportional to 667,900,866.11, 921,599,252.15 and 381,788,307.90 is: 526,808,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,900,866.11 : 921,599,252.15 = 381,788,307.90 : x
  2. Step 2: Convert to fraction form
    667,900,866.11/921,599,252.15 = 381,788,307.90/x
  3. Step 3: Cross multiply
    667,900,866.11x = 921,599,252.15 × 381,788,307.90
  4. Step 4: Simplify right side
    667,900,866.11x = 351,855,819,038,344,960
  5. Step 5: Solve for x
    x = 351,855,819,038,344,960/667,900,866.11
  6. Step 6: Final answer
    x = 526,808,448.52

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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.