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Finding the Fourth Proportional to 607,417.92, 911,130.12 and 398,379.60

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Solution

The fourth proportional to 607,417.92, 911,130.12 and 398,379.60 is: 597,571.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,417.92 : 911,130.12 = 398,379.60 : x
  2. Step 2: Convert to fraction form
    607,417.92/911,130.12 = 398,379.60/x
  3. Step 3: Cross multiply
    607,417.92x = 911,130.12 × 398,379.60
  4. Step 4: Simplify right side
    607,417.92x = 362,975,652,753.55
  5. Step 5: Solve for x
    x = 362,975,652,753.55/607,417.92
  6. Step 6: Final answer
    x = 597,571.52

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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.