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Finding the Fourth Proportional to 605,206.20, 907,809.30 and 447,742.20

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Solution

The fourth proportional to 605,206.20, 907,809.30 and 447,742.20 is: 671,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,206.20 : 907,809.30 = 447,742.20 : x
  2. Step 2: Convert to fraction form
    605,206.20/907,809.30 = 447,742.20/x
  3. Step 3: Cross multiply
    605,206.20x = 907,809.30 × 447,742.20
  4. Step 4: Simplify right side
    605,206.20x = 406,464,533,162.46
  5. Step 5: Solve for x
    x = 406,464,533,162.46/605,206.20
  6. Step 6: Final answer
    x = 671,613.30

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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.