Home / 753,705.60-1,130,428.80-280,147.20

Finding the Fourth Proportional to 753,705.60, 1,130,428.80 and 280,147.20

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Solution

The fourth proportional to 753,705.60, 1,130,428.80 and 280,147.20 is: 420,172.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,705.60 : 1,130,428.80 = 280,147.20 : x
  2. Step 2: Convert to fraction form
    753,705.60/1,130,428.80 = 280,147.20/x
  3. Step 3: Cross multiply
    753,705.60x = 1,130,428.80 × 280,147.20
  4. Step 4: Simplify right side
    753,705.60x = 316,686,463,119.36
  5. Step 5: Solve for x
    x = 316,686,463,119.36/753,705.60
  6. Step 6: Final answer
    x = 420,172.63

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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.