Home / 927,034.84-1,390,221.78-421,172.02

Finding the Fourth Proportional to 927,034.84, 1,390,221.78 and 421,172.02

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Solution

The fourth proportional to 927,034.84, 1,390,221.78 and 421,172.02 is: 631,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,034.84 : 1,390,221.78 = 421,172.02 : x
  2. Step 2: Convert to fraction form
    927,034.84/1,390,221.78 = 421,172.02/x
  3. Step 3: Cross multiply
    927,034.84x = 1,390,221.78 × 421,172.02
  4. Step 4: Simplify right side
    927,034.84x = 585,522,515,330.60
  5. Step 5: Solve for x
    x = 585,522,515,330.60/927,034.84
  6. Step 6: Final answer
    x = 631,607.89

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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.