Home / 1,178,914.32-1,626,901.78-642,370.32

Finding the Fourth Proportional to 1,178,914.32, 1,626,901.78 and 642,370.32

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Solution

The fourth proportional to 1,178,914.32, 1,626,901.78 and 642,370.32 is: 886,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,914.32 : 1,626,901.78 = 642,370.32 : x
  2. Step 2: Convert to fraction form
    1,178,914.32/1,626,901.78 = 642,370.32/x
  3. Step 3: Cross multiply
    1,178,914.32x = 1,626,901.78 × 642,370.32
  4. Step 4: Simplify right side
    1,178,914.32x = 1,045,073,417,027.17
  5. Step 5: Solve for x
    x = 1,045,073,417,027.17/1,178,914.32
  6. Step 6: Final answer
    x = 886,471.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.