Home / 1,309,461.12-1,963,619.10-660,638.16

Finding the Fourth Proportional to 1,309,461.12, 1,963,619.10 and 660,638.16

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Solution

The fourth proportional to 1,309,461.12, 1,963,619.10 and 660,638.16 is: 990,668.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,461.12 : 1,963,619.10 = 660,638.16 : x
  2. Step 2: Convert to fraction form
    1,309,461.12/1,963,619.10 = 660,638.16/x
  3. Step 3: Cross multiply
    1,309,461.12x = 1,963,619.10 × 660,638.16
  4. Step 4: Simplify right side
    1,309,461.12x = 1,297,241,709,164.86
  5. Step 5: Solve for x
    x = 1,297,241,709,164.86/1,309,461.12
  6. Step 6: Final answer
    x = 990,668.37

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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.