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Finding the Fourth Proportional to 1,018,951, 1,404,670.38 and 712,074.62

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Solution

The fourth proportional to 1,018,951, 1,404,670.38 and 712,074.62 is: 981,627.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,951 : 1,404,670.38 = 712,074.62 : x
  2. Step 2: Convert to fraction form
    1,018,951/1,404,670.38 = 712,074.62/x
  3. Step 3: Cross multiply
    1,018,951x = 1,404,670.38 × 712,074.62
  4. Step 4: Simplify right side
    1,018,951x = 1,000,230,127,063.76
  5. Step 5: Solve for x
    x = 1,000,230,127,063.76/1,018,951
  6. Step 6: Final answer
    x = 981,627.31

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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.