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Finding the Fourth Proportional to 458,880.60, 688,320.90 and 299,448.30

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Solution

The fourth proportional to 458,880.60, 688,320.90 and 299,448.30 is: 449,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,880.60 : 688,320.90 = 299,448.30 : x
  2. Step 2: Convert to fraction form
    458,880.60/688,320.90 = 299,448.30/x
  3. Step 3: Cross multiply
    458,880.60x = 688,320.90 × 299,448.30
  4. Step 4: Simplify right side
    458,880.60x = 206,116,523,359.47
  5. Step 5: Solve for x
    x = 206,116,523,359.47/458,880.60
  6. Step 6: Final answer
    x = 449,172.45

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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.