Home / 1,290,422.27-1,935,636.48-391,870.77

Finding the Fourth Proportional to 1,290,422.27, 1,935,636.48 and 391,870.77

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Solution

The fourth proportional to 1,290,422.27, 1,935,636.48 and 391,870.77 is: 587,807.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,422.27 : 1,935,636.48 = 391,870.77 : x
  2. Step 2: Convert to fraction form
    1,290,422.27/1,935,636.48 = 391,870.77/x
  3. Step 3: Cross multiply
    1,290,422.27x = 1,935,636.48 × 391,870.77
  4. Step 4: Simplify right side
    1,290,422.27x = 758,519,357,857.69
  5. Step 5: Solve for x
    x = 758,519,357,857.69/1,290,422.27
  6. Step 6: Final answer
    x = 587,807.09

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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.