Home / 665,341,982.40-998,012,973.60-407,061,656.40

Finding the Fourth Proportional to 665,341,982.40, 998,012,973.60 and 407,061,656.40

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Solution

The fourth proportional to 665,341,982.40, 998,012,973.60 and 407,061,656.40 is: 610,592,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,341,982.40 : 998,012,973.60 = 407,061,656.40 : x
  2. Step 2: Convert to fraction form
    665,341,982.40/998,012,973.60 = 407,061,656.40/x
  3. Step 3: Cross multiply
    665,341,982.40x = 998,012,973.60 × 407,061,656.40
  4. Step 4: Simplify right side
    665,341,982.40x = 406,252,814,142,305,472
  5. Step 5: Solve for x
    x = 406,252,814,142,305,472/665,341,982.40
  6. Step 6: Final answer
    x = 610,592,484.60

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Double scale
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Similar ratio
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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.