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Finding the Fourth Proportional to 605,725.20, 908,587.80 and 393,148.80

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Solution

The fourth proportional to 605,725.20, 908,587.80 and 393,148.80 is: 589,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,725.20 : 908,587.80 = 393,148.80 : x
  2. Step 2: Convert to fraction form
    605,725.20/908,587.80 = 393,148.80/x
  3. Step 3: Cross multiply
    605,725.20x = 908,587.80 × 393,148.80
  4. Step 4: Simplify right side
    605,725.20x = 357,210,203,264.64
  5. Step 5: Solve for x
    x = 357,210,203,264.64/605,725.20
  6. Step 6: Final answer
    x = 589,723.20

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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.