Home / 2,178,709.86-3,006,547.47-1,211,812.86

Finding the Fourth Proportional to 2,178,709.86, 3,006,547.47 and 1,211,812.86

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Solution

The fourth proportional to 2,178,709.86, 3,006,547.47 and 1,211,812.86 is: 1,672,261.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,709.86 : 3,006,547.47 = 1,211,812.86 : x
  2. Step 2: Convert to fraction form
    2,178,709.86/3,006,547.47 = 1,211,812.86/x
  3. Step 3: Cross multiply
    2,178,709.86x = 3,006,547.47 × 1,211,812.86
  4. Step 4: Simplify right side
    2,178,709.86x = 3,643,372,888,346.47
  5. Step 5: Solve for x
    x = 3,643,372,888,346.47/2,178,709.86
  6. Step 6: Final answer
    x = 1,672,261.62

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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.