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Finding the Fourth Proportional to 605,999.70, 908,999.55 and 290,294.10

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Solution

The fourth proportional to 605,999.70, 908,999.55 and 290,294.10 is: 435,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,999.70 : 908,999.55 = 290,294.10 : x
  2. Step 2: Convert to fraction form
    605,999.70/908,999.55 = 290,294.10/x
  3. Step 3: Cross multiply
    605,999.70x = 908,999.55 × 290,294.10
  4. Step 4: Simplify right side
    605,999.70x = 263,877,206,267.66
  5. Step 5: Solve for x
    x = 263,877,206,267.66/605,999.70
  6. Step 6: Final answer
    x = 435,441.15

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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.