Home / 1,209,771.72-1,669,491-665,962.20

Finding the Fourth Proportional to 1,209,771.72, 1,669,491 and 665,962.20

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Solution

The fourth proportional to 1,209,771.72, 1,669,491 and 665,962.20 is: 919,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,771.72 : 1,669,491 = 665,962.20 : x
  2. Step 2: Convert to fraction form
    1,209,771.72/1,669,491 = 665,962.20/x
  3. Step 3: Cross multiply
    1,209,771.72x = 1,669,491 × 665,962.20
  4. Step 4: Simplify right side
    1,209,771.72x = 1,111,817,899,240.20
  5. Step 5: Solve for x
    x = 1,111,817,899,240.20/1,209,771.72
  6. Step 6: Final answer
    x = 919,031.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.