Home / 485,829.51-670,097.66-421,183.19

Finding the Fourth Proportional to 485,829.51, 670,097.66 and 421,183.19

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Solution

The fourth proportional to 485,829.51, 670,097.66 and 421,183.19 is: 580,931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,829.51 : 670,097.66 = 421,183.19 : x
  2. Step 2: Convert to fraction form
    485,829.51/670,097.66 = 421,183.19/x
  3. Step 3: Cross multiply
    485,829.51x = 670,097.66 × 421,183.19
  4. Step 4: Simplify right side
    485,829.51x = 282,233,864,593.93
  5. Step 5: Solve for x
    x = 282,233,864,593.93/485,829.51
  6. Step 6: Final answer
    x = 580,931.91

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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.