Home / 927,513.40-1,392,959.70-811,391.80

Finding the Fourth Proportional to 927,513.40, 1,392,959.70 and 811,391.80

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Solution

The fourth proportional to 927,513.40, 1,392,959.70 and 811,391.80 is: 1,218,565.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,513.40 : 1,392,959.70 = 811,391.80 : x
  2. Step 2: Convert to fraction form
    927,513.40/1,392,959.70 = 811,391.80/x
  3. Step 3: Cross multiply
    927,513.40x = 1,392,959.70 × 811,391.80
  4. Step 4: Simplify right side
    927,513.40x = 1,130,236,078,310.46
  5. Step 5: Solve for x
    x = 1,130,236,078,310.46/927,513.40
  6. Step 6: Final answer
    x = 1,218,565.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.