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Finding the Fourth Proportional to 607,390.92, 911,089.62 and 398,352.60

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Solution

The fourth proportional to 607,390.92, 911,089.62 and 398,352.60 is: 597,531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,390.92 : 911,089.62 = 398,352.60 : x
  2. Step 2: Convert to fraction form
    607,390.92/911,089.62 = 398,352.60/x
  3. Step 3: Cross multiply
    607,390.92x = 911,089.62 × 398,352.60
  4. Step 4: Simplify right side
    607,390.92x = 362,934,918,960.01
  5. Step 5: Solve for x
    x = 362,934,918,960.01/607,390.92
  6. Step 6: Final answer
    x = 597,531.02

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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.