Home / 420,770,436.80-631,155,655.20-404,646,123.20

Finding the Fourth Proportional to 420,770,436.80, 631,155,655.20 and 404,646,123.20

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Solution

The fourth proportional to 420,770,436.80, 631,155,655.20 and 404,646,123.20 is: 606,969,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,770,436.80 : 631,155,655.20 = 404,646,123.20 : x
  2. Step 2: Convert to fraction form
    420,770,436.80/631,155,655.20 = 404,646,123.20/x
  3. Step 3: Cross multiply
    420,770,436.80x = 631,155,655.20 × 404,646,123.20
  4. Step 4: Simplify right side
    420,770,436.80x = 255,394,689,012,435,936
  5. Step 5: Solve for x
    x = 255,394,689,012,435,936/420,770,436.80
  6. Step 6: Final answer
    x = 606,969,184.80

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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.