Home / 1,391,000.80-2,085,982.80-549,378.40

Finding the Fourth Proportional to 1,391,000.80, 2,085,982.80 and 549,378.40

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Solution

The fourth proportional to 1,391,000.80, 2,085,982.80 and 549,378.40 is: 823,862.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,000.80 : 2,085,982.80 = 549,378.40 : x
  2. Step 2: Convert to fraction form
    1,391,000.80/2,085,982.80 = 549,378.40/x
  3. Step 3: Cross multiply
    1,391,000.80x = 2,085,982.80 × 549,378.40
  4. Step 4: Simplify right side
    1,391,000.80x = 1,145,993,893,091.52
  5. Step 5: Solve for x
    x = 1,145,993,893,091.52/1,391,000.80
  6. Step 6: Final answer
    x = 823,862.86

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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.