Home / 607,689.20-911,533.80-439,727.60

Finding the Fourth Proportional to 607,689.20, 911,533.80 and 439,727.60

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Solution

The fourth proportional to 607,689.20, 911,533.80 and 439,727.60 is: 659,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,689.20 : 911,533.80 = 439,727.60 : x
  2. Step 2: Convert to fraction form
    607,689.20/911,533.80 = 439,727.60/x
  3. Step 3: Cross multiply
    607,689.20x = 911,533.80 × 439,727.60
  4. Step 4: Simplify right side
    607,689.20x = 400,826,570,192.88
  5. Step 5: Solve for x
    x = 400,826,570,192.88/607,689.20
  6. Step 6: Final answer
    x = 659,591.40

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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.