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Finding the Fourth Proportional to 458,800.60, 688,200.90 and 340,702.60

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Solution

The fourth proportional to 458,800.60, 688,200.90 and 340,702.60 is: 511,053.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,800.60 : 688,200.90 = 340,702.60 : x
  2. Step 2: Convert to fraction form
    458,800.60/688,200.90 = 340,702.60/x
  3. Step 3: Cross multiply
    458,800.60x = 688,200.90 × 340,702.60
  4. Step 4: Simplify right side
    458,800.60x = 234,471,835,952.34
  5. Step 5: Solve for x
    x = 234,471,835,952.34/458,800.60
  6. Step 6: Final answer
    x = 511,053.90

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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.