Home / 1,206,649.84-1,665,131.16-670,140.40

Finding the Fourth Proportional to 1,206,649.84, 1,665,131.16 and 670,140.40

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Solution

The fourth proportional to 1,206,649.84, 1,665,131.16 and 670,140.40 is: 924,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,649.84 : 1,665,131.16 = 670,140.40 : x
  2. Step 2: Convert to fraction form
    1,206,649.84/1,665,131.16 = 670,140.40/x
  3. Step 3: Cross multiply
    1,206,649.84x = 1,665,131.16 × 670,140.40
  4. Step 4: Simplify right side
    1,206,649.84x = 1,115,871,661,614.86
  5. Step 5: Solve for x
    x = 1,115,871,661,614.86/1,206,649.84
  6. Step 6: Final answer
    x = 924,768.42

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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.