Home / 1,457,519.78-2,011,380.78-812,981.72

Finding the Fourth Proportional to 1,457,519.78, 2,011,380.78 and 812,981.72

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Solution

The fourth proportional to 1,457,519.78, 2,011,380.78 and 812,981.72 is: 1,121,916.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457,519.78 : 2,011,380.78 = 812,981.72 : x
  2. Step 2: Convert to fraction form
    1,457,519.78/2,011,380.78 = 812,981.72/x
  3. Step 3: Cross multiply
    1,457,519.78x = 2,011,380.78 × 812,981.72
  4. Step 4: Simplify right side
    1,457,519.78x = 1,635,215,806,099.34
  5. Step 5: Solve for x
    x = 1,635,215,806,099.34/1,457,519.78
  6. Step 6: Final answer
    x = 1,121,916.72

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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.