Home / 811,521,594.11-1,218,069,546.18-391,638,455.46

Finding the Fourth Proportional to 811,521,594.11, 1,218,069,546.18 and 391,638,455.46

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Solution

The fourth proportional to 811,521,594.11, 1,218,069,546.18 and 391,638,455.46 is: 587,837,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,521,594.11 : 1,218,069,546.18 = 391,638,455.46 : x
  2. Step 2: Convert to fraction form
    811,521,594.11/1,218,069,546.18 = 391,638,455.46/x
  3. Step 3: Cross multiply
    811,521,594.11x = 1,218,069,546.18 × 391,638,455.46
  4. Step 4: Simplify right side
    811,521,594.11x = 477,042,875,709,542,464
  5. Step 5: Solve for x
    x = 477,042,875,709,542,464/811,521,594.11
  6. Step 6: Final answer
    x = 587,837,562.39

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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.