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Finding the Fourth Proportional to 1,001,978.97, 1,502,971.53 and 243,820.56

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Solution

The fourth proportional to 1,001,978.97, 1,502,971.53 and 243,820.56 is: 365,731.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001,978.97 : 1,502,971.53 = 243,820.56 : x
  2. Step 2: Convert to fraction form
    1,001,978.97/1,502,971.53 = 243,820.56/x
  3. Step 3: Cross multiply
    1,001,978.97x = 1,502,971.53 × 243,820.56
  4. Step 4: Simplify right side
    1,001,978.97x = 366,455,360,108.66
  5. Step 5: Solve for x
    x = 366,455,360,108.66/1,001,978.97
  6. Step 6: Final answer
    x = 365,731.59

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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.