Home / 738,409.20-1,107,613.80-422,606.40

Finding the Fourth Proportional to 738,409.20, 1,107,613.80 and 422,606.40

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Solution

The fourth proportional to 738,409.20, 1,107,613.80 and 422,606.40 is: 633,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,409.20 : 1,107,613.80 = 422,606.40 : x
  2. Step 2: Convert to fraction form
    738,409.20/1,107,613.80 = 422,606.40/x
  3. Step 3: Cross multiply
    738,409.20x = 1,107,613.80 × 422,606.40
  4. Step 4: Simplify right side
    738,409.20x = 468,084,680,608.32
  5. Step 5: Solve for x
    x = 468,084,680,608.32/738,409.20
  6. Step 6: Final answer
    x = 633,909.60

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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.