Home / 809,860.20-1,215,308.70-472,900.20

Finding the Fourth Proportional to 809,860.20, 1,215,308.70 and 472,900.20

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Solution

The fourth proportional to 809,860.20, 1,215,308.70 and 472,900.20 is: 709,653.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,860.20 : 1,215,308.70 = 472,900.20 : x
  2. Step 2: Convert to fraction form
    809,860.20/1,215,308.70 = 472,900.20/x
  3. Step 3: Cross multiply
    809,860.20x = 1,215,308.70 × 472,900.20
  4. Step 4: Simplify right side
    809,860.20x = 574,719,727,291.74
  5. Step 5: Solve for x
    x = 574,719,727,291.74/809,860.20
  6. Step 6: Final answer
    x = 709,653.01

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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.