Home / 1,388,305.80-2,081,474.55-630,510.30

Finding the Fourth Proportional to 1,388,305.80, 2,081,474.55 and 630,510.30

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Solution

The fourth proportional to 1,388,305.80, 2,081,474.55 and 630,510.30 is: 945,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,305.80 : 2,081,474.55 = 630,510.30 : x
  2. Step 2: Convert to fraction form
    1,388,305.80/2,081,474.55 = 630,510.30/x
  3. Step 3: Cross multiply
    1,388,305.80x = 2,081,474.55 × 630,510.30
  4. Step 4: Simplify right side
    1,388,305.80x = 1,312,391,142,962.87
  5. Step 5: Solve for x
    x = 1,312,391,142,962.87/1,388,305.80
  6. Step 6: Final answer
    x = 945,318.49

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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.