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Finding the Fourth Proportional to 640,017.28, 957,942.60 and 471,471.40

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Solution

The fourth proportional to 640,017.28, 957,942.60 and 471,471.40 is: 705,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,017.28 : 957,942.60 = 471,471.40 : x
  2. Step 2: Convert to fraction form
    640,017.28/957,942.60 = 471,471.40/x
  3. Step 3: Cross multiply
    640,017.28x = 957,942.60 × 471,471.40
  4. Step 4: Simplify right side
    640,017.28x = 451,642,538,741.64
  5. Step 5: Solve for x
    x = 451,642,538,741.64/640,017.28
  6. Step 6: Final answer
    x = 705,672.41

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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.