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Finding the Fourth Proportional to 868,833.20, 1,303,480.20 and 307,809.20

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Solution

The fourth proportional to 868,833.20, 1,303,480.20 and 307,809.20 is: 461,795.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,833.20 : 1,303,480.20 = 307,809.20 : x
  2. Step 2: Convert to fraction form
    868,833.20/1,303,480.20 = 307,809.20/x
  3. Step 3: Cross multiply
    868,833.20x = 1,303,480.20 × 307,809.20
  4. Step 4: Simplify right side
    868,833.20x = 401,223,197,577.84
  5. Step 5: Solve for x
    x = 401,223,197,577.84/868,833.20
  6. Step 6: Final answer
    x = 461,795.43

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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.