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Finding the Fourth Proportional to 605,607.20, 908,410.80 and 289,901.60

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Solution

The fourth proportional to 605,607.20, 908,410.80 and 289,901.60 is: 434,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,607.20 : 908,410.80 = 289,901.60 : x
  2. Step 2: Convert to fraction form
    605,607.20/908,410.80 = 289,901.60/x
  3. Step 3: Cross multiply
    605,607.20x = 908,410.80 × 289,901.60
  4. Step 4: Simplify right side
    605,607.20x = 263,349,744,377.28
  5. Step 5: Solve for x
    x = 263,349,744,377.28/605,607.20
  6. Step 6: Final answer
    x = 434,852.40

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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.