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Finding the Fourth Proportional to 605,215.70, 908,698.35 and 456,499.70

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Solution

The fourth proportional to 605,215.70, 908,698.35 and 456,499.70 is: 685,409.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,215.70 : 908,698.35 = 456,499.70 : x
  2. Step 2: Convert to fraction form
    605,215.70/908,698.35 = 456,499.70/x
  3. Step 3: Cross multiply
    605,215.70x = 908,698.35 × 456,499.70
  4. Step 4: Simplify right side
    605,215.70x = 414,820,524,165.50
  5. Step 5: Solve for x
    x = 414,820,524,165.50/605,215.70
  6. Step 6: Final answer
    x = 685,409.39

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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.