Home / 626,854.20-865,078.50-354,917.40

Finding the Fourth Proportional to 626,854.20, 865,078.50 and 354,917.40

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Solution

The fourth proportional to 626,854.20, 865,078.50 and 354,917.40 is: 489,797.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,854.20 : 865,078.50 = 354,917.40 : x
  2. Step 2: Convert to fraction form
    626,854.20/865,078.50 = 354,917.40/x
  3. Step 3: Cross multiply
    626,854.20x = 865,078.50 × 354,917.40
  4. Step 4: Simplify right side
    626,854.20x = 307,031,412,015.90
  5. Step 5: Solve for x
    x = 307,031,412,015.90/626,854.20
  6. Step 6: Final answer
    x = 489,797.17

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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.