Home / 2,312,487.70-3,191,239.11-1,280,066.69

Finding the Fourth Proportional to 2,312,487.70, 3,191,239.11 and 1,280,066.69

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Solution

The fourth proportional to 2,312,487.70, 3,191,239.11 and 1,280,066.69 is: 1,766,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312,487.70 : 3,191,239.11 = 1,280,066.69 : x
  2. Step 2: Convert to fraction form
    2,312,487.70/3,191,239.11 = 1,280,066.69/x
  3. Step 3: Cross multiply
    2,312,487.70x = 3,191,239.11 × 1,280,066.69
  4. Step 4: Simplify right side
    2,312,487.70x = 4,084,998,884,536.25
  5. Step 5: Solve for x
    x = 4,084,998,884,536.25/2,312,487.70
  6. Step 6: Final answer
    x = 1,766,495.40

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.