Home / 657,543.60-986,315.40-214,311.60

Finding the Fourth Proportional to 657,543.60, 986,315.40 and 214,311.60

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Solution

The fourth proportional to 657,543.60, 986,315.40 and 214,311.60 is: 321,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,543.60 : 986,315.40 = 214,311.60 : x
  2. Step 2: Convert to fraction form
    657,543.60/986,315.40 = 214,311.60/x
  3. Step 3: Cross multiply
    657,543.60x = 986,315.40 × 214,311.60
  4. Step 4: Simplify right side
    657,543.60x = 211,378,831,478.64
  5. Step 5: Solve for x
    x = 211,378,831,478.64/657,543.60
  6. Step 6: Final answer
    x = 321,467.40

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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.