Home / 1,210,618.32-1,670,253.39-781,183.86

Finding the Fourth Proportional to 1,210,618.32, 1,670,253.39 and 781,183.86

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Solution

The fourth proportional to 1,210,618.32, 1,670,253.39 and 781,183.86 is: 1,077,775.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,618.32 : 1,670,253.39 = 781,183.86 : x
  2. Step 2: Convert to fraction form
    1,210,618.32/1,670,253.39 = 781,183.86/x
  3. Step 3: Cross multiply
    1,210,618.32x = 1,670,253.39 × 781,183.86
  4. Step 4: Simplify right side
    1,210,618.32x = 1,304,774,990,378.29
  5. Step 5: Solve for x
    x = 1,304,774,990,378.29/1,210,618.32
  6. Step 6: Final answer
    x = 1,077,775.69

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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.