Home / 872,148.74-1,203,661.14-499,647.05

Finding the Fourth Proportional to 872,148.74, 1,203,661.14 and 499,647.05

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Solution

The fourth proportional to 872,148.74, 1,203,661.14 and 499,647.05 is: 689,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,148.74 : 1,203,661.14 = 499,647.05 : x
  2. Step 2: Convert to fraction form
    872,148.74/1,203,661.14 = 499,647.05/x
  3. Step 3: Cross multiply
    872,148.74x = 1,203,661.14 × 499,647.05
  4. Step 4: Simplify right side
    872,148.74x = 601,405,731,782.33
  5. Step 5: Solve for x
    x = 601,405,731,782.33/872,148.74
  6. Step 6: Final answer
    x = 689,567.85

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Double scale
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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.