Home / 385,619.90-578,429.85-326,716.70

Finding the Fourth Proportional to 385,619.90, 578,429.85 and 326,716.70

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Solution

The fourth proportional to 385,619.90, 578,429.85 and 326,716.70 is: 490,075.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,619.90 : 578,429.85 = 326,716.70 : x
  2. Step 2: Convert to fraction form
    385,619.90/578,429.85 = 326,716.70/x
  3. Step 3: Cross multiply
    385,619.90x = 578,429.85 × 326,716.70
  4. Step 4: Simplify right side
    385,619.90x = 188,982,691,773.50
  5. Step 5: Solve for x
    x = 188,982,691,773.50/385,619.90
  6. Step 6: Final answer
    x = 490,075.05

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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.