Home / 658,407.40-987,611.10-185,108.20

Finding the Fourth Proportional to 658,407.40, 987,611.10 and 185,108.20

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Solution

The fourth proportional to 658,407.40, 987,611.10 and 185,108.20 is: 277,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,407.40 : 987,611.10 = 185,108.20 : x
  2. Step 2: Convert to fraction form
    658,407.40/987,611.10 = 185,108.20/x
  3. Step 3: Cross multiply
    658,407.40x = 987,611.10 × 185,108.20
  4. Step 4: Simplify right side
    658,407.40x = 182,814,913,021.02
  5. Step 5: Solve for x
    x = 182,814,913,021.02/658,407.40
  6. Step 6: Final answer
    x = 277,662.30

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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.