Home / 1,259,618-1,889,428.37-312,988.72

Finding the Fourth Proportional to 1,259,618, 1,889,428.37 and 312,988.72

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Solution

The fourth proportional to 1,259,618, 1,889,428.37 and 312,988.72 is: 469,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,618 : 1,889,428.37 = 312,988.72 : x
  2. Step 2: Convert to fraction form
    1,259,618/1,889,428.37 = 312,988.72/x
  3. Step 3: Cross multiply
    1,259,618x = 1,889,428.37 × 312,988.72
  4. Step 4: Simplify right side
    1,259,618x = 591,369,767,057.99
  5. Step 5: Solve for x
    x = 591,369,767,057.99/1,259,618
  6. Step 6: Final answer
    x = 469,483.42

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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.