Home / 1,385,162.40-2,077,840.80-786,410.40

Finding the Fourth Proportional to 1,385,162.40, 2,077,840.80 and 786,410.40

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Solution

The fourth proportional to 1,385,162.40, 2,077,840.80 and 786,410.40 is: 1,179,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,162.40 : 2,077,840.80 = 786,410.40 : x
  2. Step 2: Convert to fraction form
    1,385,162.40/2,077,840.80 = 786,410.40/x
  3. Step 3: Cross multiply
    1,385,162.40x = 2,077,840.80 × 786,410.40
  4. Step 4: Simplify right side
    1,385,162.40x = 1,634,035,614,664.32
  5. Step 5: Solve for x
    x = 1,634,035,614,664.32/1,385,162.40
  6. Step 6: Final answer
    x = 1,179,670.78

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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.