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Finding the Fourth Proportional to 1,981,460.16, 2,971,253.39 and 767,605.32

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Solution

The fourth proportional to 1,981,460.16, 2,971,253.39 and 767,605.32 is: 1,151,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,460.16 : 2,971,253.39 = 767,605.32 : x
  2. Step 2: Convert to fraction form
    1,981,460.16/2,971,253.39 = 767,605.32/x
  3. Step 3: Cross multiply
    1,981,460.16x = 2,971,253.39 × 767,605.32
  4. Step 4: Simplify right side
    1,981,460.16x = 2,280,749,905,394.01
  5. Step 5: Solve for x
    x = 2,280,749,905,394.01/1,981,460.16
  6. Step 6: Final answer
    x = 1,151,045.05

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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.