Home / 509,984,692.65-764,977,038.98-399,019,811.85

Finding the Fourth Proportional to 509,984,692.65, 764,977,038.98 and 399,019,811.85

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Solution

The fourth proportional to 509,984,692.65, 764,977,038.98 and 399,019,811.85 is: 598,529,717.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,984,692.65 : 764,977,038.98 = 399,019,811.85 : x
  2. Step 2: Convert to fraction form
    509,984,692.65/764,977,038.98 = 399,019,811.85/x
  3. Step 3: Cross multiply
    509,984,692.65x = 764,977,038.98 × 399,019,811.85
  4. Step 4: Simplify right side
    509,984,692.65x = 305,240,994,161,374,656
  5. Step 5: Solve for x
    x = 305,240,994,161,374,656/509,984,692.65
  6. Step 6: Final answer
    x = 598,529,717.78

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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.