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Finding the Fourth Proportional to 612,234.70, 917,586.60 and 312,834.40

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Solution

The fourth proportional to 612,234.70, 917,586.60 and 312,834.40 is: 468,860.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,234.70 : 917,586.60 = 312,834.40 : x
  2. Step 2: Convert to fraction form
    612,234.70/917,586.60 = 312,834.40/x
  3. Step 3: Cross multiply
    612,234.70x = 917,586.60 × 312,834.40
  4. Step 4: Simplify right side
    612,234.70x = 287,052,653,459.04
  5. Step 5: Solve for x
    x = 287,052,653,459.04/612,234.70
  6. Step 6: Final answer
    x = 468,860.48

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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.