Home / 1,385,469.12-2,078,218.80-486,936.48

Finding the Fourth Proportional to 1,385,469.12, 2,078,218.80 and 486,936.48

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Solution

The fourth proportional to 1,385,469.12, 2,078,218.80 and 486,936.48 is: 730,410.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,469.12 : 2,078,218.80 = 486,936.48 : x
  2. Step 2: Convert to fraction form
    1,385,469.12/2,078,218.80 = 486,936.48/x
  3. Step 3: Cross multiply
    1,385,469.12x = 2,078,218.80 × 486,936.48
  4. Step 4: Simplify right side
    1,385,469.12x = 1,011,960,547,141.82
  5. Step 5: Solve for x
    x = 1,011,960,547,141.82/1,385,469.12
  6. Step 6: Final answer
    x = 730,410.03

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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.