Home / 686,826,770.40-1,028,728,501.20-413,721,208.80

Finding the Fourth Proportional to 686,826,770.40, 1,028,728,501.20 and 413,721,208.80

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Solution

The fourth proportional to 686,826,770.40, 1,028,728,501.20 and 413,721,208.80 is: 619,671,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,826,770.40 : 1,028,728,501.20 = 413,721,208.80 : x
  2. Step 2: Convert to fraction form
    686,826,770.40/1,028,728,501.20 = 413,721,208.80/x
  3. Step 3: Cross multiply
    686,826,770.40x = 1,028,728,501.20 × 413,721,208.80
  4. Step 4: Simplify right side
    686,826,770.40x = 425,606,799,043,476,288
  5. Step 5: Solve for x
    x = 425,606,799,043,476,288/686,826,770.40
  6. Step 6: Final answer
    x = 619,671,243.73

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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.