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Finding the Fourth Proportional to 607,400.40, 911,489.40 and 354,680.40

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Solution

The fourth proportional to 607,400.40, 911,489.40 and 354,680.40 is: 532,247.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,400.40 : 911,489.40 = 354,680.40 : x
  2. Step 2: Convert to fraction form
    607,400.40/911,489.40 = 354,680.40/x
  3. Step 3: Cross multiply
    607,400.40x = 911,489.40 × 354,680.40
  4. Step 4: Simplify right side
    607,400.40x = 323,287,424,987.76
  5. Step 5: Solve for x
    x = 323,287,424,987.76/607,400.40
  6. Step 6: Final answer
    x = 532,247.63

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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.