Home / 1,421,168.45-1,961,217.61-776,588.69

Finding the Fourth Proportional to 1,421,168.45, 1,961,217.61 and 776,588.69

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Solution

The fourth proportional to 1,421,168.45, 1,961,217.61 and 776,588.69 is: 1,071,695.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,168.45 : 1,961,217.61 = 776,588.69 : x
  2. Step 2: Convert to fraction form
    1,421,168.45/1,961,217.61 = 776,588.69/x
  3. Step 3: Cross multiply
    1,421,168.45x = 1,961,217.61 × 776,588.69
  4. Step 4: Simplify right side
    1,421,168.45x = 1,523,059,417,516.40
  5. Step 5: Solve for x
    x = 1,523,059,417,516.40/1,421,168.45
  6. Step 6: Final answer
    x = 1,071,695.21

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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.