Home / 1,490,430-2,056,793.40-811,326

Finding the Fourth Proportional to 1,490,430, 2,056,793.40 and 811,326

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Solution

The fourth proportional to 1,490,430, 2,056,793.40 and 811,326 is: 1,119,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,430 : 2,056,793.40 = 811,326 : x
  2. Step 2: Convert to fraction form
    1,490,430/2,056,793.40 = 811,326/x
  3. Step 3: Cross multiply
    1,490,430x = 2,056,793.40 × 811,326
  4. Step 4: Simplify right side
    1,490,430x = 1,668,729,962,048.40
  5. Step 5: Solve for x
    x = 1,668,729,962,048.40/1,490,430
  6. Step 6: Final answer
    x = 1,119,629.88

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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.