Home / 642,626.40-963,766.80-193,346.40

Finding the Fourth Proportional to 642,626.40, 963,766.80 and 193,346.40

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Solution

The fourth proportional to 642,626.40, 963,766.80 and 193,346.40 is: 289,967.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,626.40 : 963,766.80 = 193,346.40 : x
  2. Step 2: Convert to fraction form
    642,626.40/963,766.80 = 193,346.40/x
  3. Step 3: Cross multiply
    642,626.40x = 963,766.80 × 193,346.40
  4. Step 4: Simplify right side
    642,626.40x = 186,340,841,219.52
  5. Step 5: Solve for x
    x = 186,340,841,219.52/642,626.40
  6. Step 6: Final answer
    x = 289,967.61

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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.