Home / 868,400.80-1,302,601.20-307,362.40

Finding the Fourth Proportional to 868,400.80, 1,302,601.20 and 307,362.40

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Solution

The fourth proportional to 868,400.80, 1,302,601.20 and 307,362.40 is: 461,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,400.80 : 1,302,601.20 = 307,362.40 : x
  2. Step 2: Convert to fraction form
    868,400.80/1,302,601.20 = 307,362.40/x
  3. Step 3: Cross multiply
    868,400.80x = 1,302,601.20 × 307,362.40
  4. Step 4: Simplify right side
    868,400.80x = 400,370,631,074.88
  5. Step 5: Solve for x
    x = 400,370,631,074.88/868,400.80
  6. Step 6: Final answer
    x = 461,043.60

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Double scale
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Similar ratio
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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.