Home / 1,385,145.40-2,077,815.30-786,393.40

Finding the Fourth Proportional to 1,385,145.40, 2,077,815.30 and 786,393.40

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Solution

The fourth proportional to 1,385,145.40, 2,077,815.30 and 786,393.40 is: 1,179,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,145.40 : 2,077,815.30 = 786,393.40 : x
  2. Step 2: Convert to fraction form
    1,385,145.40/2,077,815.30 = 786,393.40/x
  3. Step 3: Cross multiply
    1,385,145.40x = 2,077,815.30 × 786,393.40
  4. Step 4: Simplify right side
    1,385,145.40x = 1,633,980,238,339.02
  5. Step 5: Solve for x
    x = 1,633,980,238,339.02/1,385,145.40
  6. Step 6: Final answer
    x = 1,179,645.28

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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.