Home / 401,194.66-598,205.20-390,172.18

Finding the Fourth Proportional to 401,194.66, 598,205.20 and 390,172.18

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Solution

The fourth proportional to 401,194.66, 598,205.20 and 390,172.18 is: 581,770.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,194.66 : 598,205.20 = 390,172.18 : x
  2. Step 2: Convert to fraction form
    401,194.66/598,205.20 = 390,172.18/x
  3. Step 3: Cross multiply
    401,194.66x = 598,205.20 × 390,172.18
  4. Step 4: Simplify right side
    401,194.66x = 233,403,026,971.34
  5. Step 5: Solve for x
    x = 233,403,026,971.34/401,194.66
  6. Step 6: Final answer
    x = 581,770.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.