Home / 1,398,674.30-1,930,167.69-786,827.48

Finding the Fourth Proportional to 1,398,674.30, 1,930,167.69 and 786,827.48

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Solution

The fourth proportional to 1,398,674.30, 1,930,167.69 and 786,827.48 is: 1,085,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,674.30 : 1,930,167.69 = 786,827.48 : x
  2. Step 2: Convert to fraction form
    1,398,674.30/1,930,167.69 = 786,827.48/x
  3. Step 3: Cross multiply
    1,398,674.30x = 1,930,167.69 × 786,827.48
  4. Step 4: Simplify right side
    1,398,674.30x = 1,518,708,979,500.12
  5. Step 5: Solve for x
    x = 1,518,708,979,500.12/1,398,674.30
  6. Step 6: Final answer
    x = 1,085,820.32

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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.