Home / 1,318,726.02-1,978,387.38-420,218.94

Finding the Fourth Proportional to 1,318,726.02, 1,978,387.38 and 420,218.94

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Solution

The fourth proportional to 1,318,726.02, 1,978,387.38 and 420,218.94 is: 630,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,726.02 : 1,978,387.38 = 420,218.94 : x
  2. Step 2: Convert to fraction form
    1,318,726.02/1,978,387.38 = 420,218.94/x
  3. Step 3: Cross multiply
    1,318,726.02x = 1,978,387.38 × 420,218.94
  4. Step 4: Simplify right side
    1,318,726.02x = 831,355,847,732.98
  5. Step 5: Solve for x
    x = 831,355,847,732.98/1,318,726.02
  6. Step 6: Final answer
    x = 630,423.48

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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.