Home / 1,420,420.80-2,130,631.20-942,123.90

Finding the Fourth Proportional to 1,420,420.80, 2,130,631.20 and 942,123.90

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Solution

The fourth proportional to 1,420,420.80, 2,130,631.20 and 942,123.90 is: 1,413,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,420.80 : 2,130,631.20 = 942,123.90 : x
  2. Step 2: Convert to fraction form
    1,420,420.80/2,130,631.20 = 942,123.90/x
  3. Step 3: Cross multiply
    1,420,420.80x = 2,130,631.20 × 942,123.90
  4. Step 4: Simplify right side
    1,420,420.80x = 2,007,318,575,605.68
  5. Step 5: Solve for x
    x = 2,007,318,575,605.68/1,420,420.80
  6. Step 6: Final answer
    x = 1,413,185.85

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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.