Home / 717,419.23-990,083.48-395,129.25

Finding the Fourth Proportional to 717,419.23, 990,083.48 and 395,129.25

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Solution

The fourth proportional to 717,419.23, 990,083.48 and 395,129.25 is: 545,303.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,419.23 : 990,083.48 = 395,129.25 : x
  2. Step 2: Convert to fraction form
    717,419.23/990,083.48 = 395,129.25/x
  3. Step 3: Cross multiply
    717,419.23x = 990,083.48 × 395,129.25
  4. Step 4: Simplify right side
    717,419.23x = 391,210,940,914.14
  5. Step 5: Solve for x
    x = 391,210,940,914.14/717,419.23
  6. Step 6: Final answer
    x = 545,303.12

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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.