Home / 1,285,513.40-1,926,887.70-486,486.20

Finding the Fourth Proportional to 1,285,513.40, 1,926,887.70 and 486,486.20

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Solution

The fourth proportional to 1,285,513.40, 1,926,887.70 and 486,486.20 is: 729,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,513.40 : 1,926,887.70 = 486,486.20 : x
  2. Step 2: Convert to fraction form
    1,285,513.40/1,926,887.70 = 486,486.20/x
  3. Step 3: Cross multiply
    1,285,513.40x = 1,926,887.70 × 486,486.20
  4. Step 4: Simplify right side
    1,285,513.40x = 937,404,274,999.74
  5. Step 5: Solve for x
    x = 937,404,274,999.74/1,285,513.40
  6. Step 6: Final answer
    x = 729,206.15

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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.