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Finding the Fourth Proportional to 607,387.92, 911,085.12 and 398,349.60

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Solution

The fourth proportional to 607,387.92, 911,085.12 and 398,349.60 is: 597,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,387.92 : 911,085.12 = 398,349.60 : x
  2. Step 2: Convert to fraction form
    607,387.92/911,085.12 = 398,349.60/x
  3. Step 3: Cross multiply
    607,387.92x = 911,085.12 × 398,349.60
  4. Step 4: Simplify right side
    607,387.92x = 362,930,393,117.95
  5. Step 5: Solve for x
    x = 362,930,393,117.95/607,387.92
  6. Step 6: Final answer
    x = 597,526.52

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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.