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Finding the Fourth Proportional to 458,000.60, 686,680.90 and 270,915.80

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Solution

The fourth proportional to 458,000.60, 686,680.90 and 270,915.80 is: 406,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,000.60 : 686,680.90 = 270,915.80 : x
  2. Step 2: Convert to fraction form
    458,000.60/686,680.90 = 270,915.80/x
  3. Step 3: Cross multiply
    458,000.60x = 686,680.90 × 270,915.80
  4. Step 4: Simplify right side
    458,000.60x = 186,032,705,368.22
  5. Step 5: Solve for x
    x = 186,032,705,368.22/458,000.60
  6. Step 6: Final answer
    x = 406,184.41

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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.