Home / 1,390,832-1,919,348.16-754,928

Finding the Fourth Proportional to 1,390,832, 1,919,348.16 and 754,928

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Solution

The fourth proportional to 1,390,832, 1,919,348.16 and 754,928 is: 1,041,800.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,832 : 1,919,348.16 = 754,928 : x
  2. Step 2: Convert to fraction form
    1,390,832/1,919,348.16 = 754,928/x
  3. Step 3: Cross multiply
    1,390,832x = 1,919,348.16 × 754,928
  4. Step 4: Simplify right side
    1,390,832x = 1,448,969,667,732.48
  5. Step 5: Solve for x
    x = 1,448,969,667,732.48/1,390,832
  6. Step 6: Final answer
    x = 1,041,800.64

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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.