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Finding the Fourth Proportional to 645,216.60, 965,856.60 and 574,357.80

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Solution

The fourth proportional to 645,216.60, 965,856.60 and 574,357.80 is: 859,784.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,216.60 : 965,856.60 = 574,357.80 : x
  2. Step 2: Convert to fraction form
    645,216.60/965,856.60 = 574,357.80/x
  3. Step 3: Cross multiply
    645,216.60x = 965,856.60 × 574,357.80
  4. Step 4: Simplify right side
    645,216.60x = 554,747,271,891.48
  5. Step 5: Solve for x
    x = 554,747,271,891.48/645,216.60
  6. Step 6: Final answer
    x = 859,784.56

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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.