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Finding the Fourth Proportional to 605,870.31, 908,990.04 and 286,267.60

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Solution

The fourth proportional to 605,870.31, 908,990.04 and 286,267.60 is: 429,488.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,870.31 : 908,990.04 = 286,267.60 : x
  2. Step 2: Convert to fraction form
    605,870.31/908,990.04 = 286,267.60/x
  3. Step 3: Cross multiply
    605,870.31x = 908,990.04 × 286,267.60
  4. Step 4: Simplify right side
    605,870.31x = 260,214,397,174.70
  5. Step 5: Solve for x
    x = 260,214,397,174.70/605,870.31
  6. Step 6: Final answer
    x = 429,488.61

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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.