Home / 1,290,538.53-1,935,681.66-391,988.07

Finding the Fourth Proportional to 1,290,538.53, 1,935,681.66 and 391,988.07

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Solution

The fourth proportional to 1,290,538.53, 1,935,681.66 and 391,988.07 is: 587,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,538.53 : 1,935,681.66 = 391,988.07 : x
  2. Step 2: Convert to fraction form
    1,290,538.53/1,935,681.66 = 391,988.07/x
  3. Step 3: Cross multiply
    1,290,538.53x = 1,935,681.66 × 391,988.07
  4. Step 4: Simplify right side
    1,290,538.53x = 758,764,118,037.80
  5. Step 5: Solve for x
    x = 758,764,118,037.80/1,290,538.53
  6. Step 6: Final answer
    x = 587,943.79

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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.