Home / 1,290,368.43-1,935,427.57-391,818.06

Finding the Fourth Proportional to 1,290,368.43, 1,935,427.57 and 391,818.06

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Solution

The fourth proportional to 1,290,368.43, 1,935,427.57 and 391,818.06 is: 587,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,368.43 : 1,935,427.57 = 391,818.06 : x
  2. Step 2: Convert to fraction form
    1,290,368.43/1,935,427.57 = 391,818.06/x
  3. Step 3: Cross multiply
    1,290,368.43x = 1,935,427.57 × 391,818.06
  4. Step 4: Simplify right side
    1,290,368.43x = 758,335,481,313.75
  5. Step 5: Solve for x
    x = 758,335,481,313.75/1,290,368.43
  6. Step 6: Final answer
    x = 587,689.12

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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.