Home / 1,290,368.48-1,935,427.64-391,818.11

Finding the Fourth Proportional to 1,290,368.48, 1,935,427.64 and 391,818.11

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Solution

The fourth proportional to 1,290,368.48, 1,935,427.64 and 391,818.11 is: 587,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,368.48 : 1,935,427.64 = 391,818.11 : x
  2. Step 2: Convert to fraction form
    1,290,368.48/1,935,427.64 = 391,818.11/x
  3. Step 3: Cross multiply
    1,290,368.48x = 1,935,427.64 × 391,818.11
  4. Step 4: Simplify right side
    1,290,368.48x = 758,335,605,764.68
  5. Step 5: Solve for x
    x = 758,335,605,764.68/1,290,368.48
  6. Step 6: Final answer
    x = 587,689.19

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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.