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Finding the Fourth Proportional to 660,572.64, 911,575.32 and 384,913.44

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Solution

The fourth proportional to 660,572.64, 911,575.32 and 384,913.44 is: 531,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,572.64 : 911,575.32 = 384,913.44 : x
  2. Step 2: Convert to fraction form
    660,572.64/911,575.32 = 384,913.44/x
  3. Step 3: Cross multiply
    660,572.64x = 911,575.32 × 384,913.44
  4. Step 4: Simplify right side
    660,572.64x = 350,877,593,360.68
  5. Step 5: Solve for x
    x = 350,877,593,360.68/660,572.64
  6. Step 6: Final answer
    x = 531,171.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.