Home / 680,938.20-1,021,407.30-539,933.40

Finding the Fourth Proportional to 680,938.20, 1,021,407.30 and 539,933.40

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Solution

The fourth proportional to 680,938.20, 1,021,407.30 and 539,933.40 is: 809,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,938.20 : 1,021,407.30 = 539,933.40 : x
  2. Step 2: Convert to fraction form
    680,938.20/1,021,407.30 = 539,933.40/x
  3. Step 3: Cross multiply
    680,938.20x = 1,021,407.30 × 539,933.40
  4. Step 4: Simplify right side
    680,938.20x = 551,491,916,273.82
  5. Step 5: Solve for x
    x = 551,491,916,273.82/680,938.20
  6. Step 6: Final answer
    x = 809,900.10

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1.5x scale

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.