Home / 509,408,194.39-702,985,688.88-289,403,692.63

Finding the Fourth Proportional to 509,408,194.39, 702,985,688.88 and 289,403,692.63

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Solution

The fourth proportional to 509,408,194.39, 702,985,688.88 and 289,403,692.63 is: 399,378,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,408,194.39 : 702,985,688.88 = 289,403,692.63 : x
  2. Step 2: Convert to fraction form
    509,408,194.39/702,985,688.88 = 289,403,692.63/x
  3. Step 3: Cross multiply
    509,408,194.39x = 702,985,688.88 × 289,403,692.63
  4. Step 4: Simplify right side
    509,408,194.39x = 203,446,654,227,916,320
  5. Step 5: Solve for x
    x = 203,446,654,227,916,320/509,408,194.39
  6. Step 6: Final answer
    x = 399,378,448.30

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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.