Home / 739,955.84-1,021,139.96-400,424.09

Finding the Fourth Proportional to 739,955.84, 1,021,139.96 and 400,424.09

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Solution

The fourth proportional to 739,955.84, 1,021,139.96 and 400,424.09 is: 552,585.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,955.84 : 1,021,139.96 = 400,424.09 : x
  2. Step 2: Convert to fraction form
    739,955.84/1,021,139.96 = 400,424.09/x
  3. Step 3: Cross multiply
    739,955.84x = 1,021,139.96 × 400,424.09
  4. Step 4: Simplify right side
    739,955.84x = 408,889,039,245.64
  5. Step 5: Solve for x
    x = 408,889,039,245.64/739,955.84
  6. Step 6: Final answer
    x = 552,585.73

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1.5x scale

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.