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Finding the Fourth Proportional to 446,893.20, 670,339.80 and 397,904.40

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Solution

The fourth proportional to 446,893.20, 670,339.80 and 397,904.40 is: 596,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,893.20 : 670,339.80 = 397,904.40 : x
  2. Step 2: Convert to fraction form
    446,893.20/670,339.80 = 397,904.40/x
  3. Step 3: Cross multiply
    446,893.20x = 670,339.80 × 397,904.40
  4. Step 4: Simplify right side
    446,893.20x = 266,731,155,915.12
  5. Step 5: Solve for x
    x = 266,731,155,915.12/446,893.20
  6. Step 6: Final answer
    x = 596,856.60

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Half scale
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Double scale
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Similar ratio
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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.