Home / 1,318,131.02-1,977,113.00-420,217.07

Finding the Fourth Proportional to 1,318,131.02, 1,977,113.00 and 420,217.07

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Solution

The fourth proportional to 1,318,131.02, 1,977,113.00 and 420,217.07 is: 630,298.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,131.02 : 1,977,113.00 = 420,217.07 : x
  2. Step 2: Convert to fraction form
    1,318,131.02/1,977,113.00 = 420,217.07/x
  3. Step 3: Cross multiply
    1,318,131.02x = 1,977,113.00 × 420,217.07
  4. Step 4: Simplify right side
    1,318,131.02x = 830,816,623,083.89
  5. Step 5: Solve for x
    x = 830,816,623,083.89/1,318,131.02
  6. Step 6: Final answer
    x = 630,298.97

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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.