Home / 680,935.20-1,021,402.80-539,930.40

Finding the Fourth Proportional to 680,935.20, 1,021,402.80 and 539,930.40

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Solution

The fourth proportional to 680,935.20, 1,021,402.80 and 539,930.40 is: 809,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,935.20 : 1,021,402.80 = 539,930.40 : x
  2. Step 2: Convert to fraction form
    680,935.20/1,021,402.80 = 539,930.40/x
  3. Step 3: Cross multiply
    680,935.20x = 1,021,402.80 × 539,930.40
  4. Step 4: Simplify right side
    680,935.20x = 551,486,422,365.12
  5. Step 5: Solve for x
    x = 551,486,422,365.12/680,935.20
  6. Step 6: Final answer
    x = 809,895.60

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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.