Home / 1,378,139.80-2,061,377.70-1,237,005.40

Finding the Fourth Proportional to 1,378,139.80, 2,061,377.70 and 1,237,005.40

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Solution

The fourth proportional to 1,378,139.80, 2,061,377.70 and 1,237,005.40 is: 1,850,273.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,139.80 : 2,061,377.70 = 1,237,005.40 : x
  2. Step 2: Convert to fraction form
    1,378,139.80/2,061,377.70 = 1,237,005.40/x
  3. Step 3: Cross multiply
    1,378,139.80x = 2,061,377.70 × 1,237,005.40
  4. Step 4: Simplify right side
    1,378,139.80x = 2,549,935,346,339.58
  5. Step 5: Solve for x
    x = 2,549,935,346,339.58/1,378,139.80
  6. Step 6: Final answer
    x = 1,850,273.35

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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.