Home / 828,019.20-1,242,028.80-709,921.20

Finding the Fourth Proportional to 828,019.20, 1,242,028.80 and 709,921.20

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Solution

The fourth proportional to 828,019.20, 1,242,028.80 and 709,921.20 is: 1,064,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,019.20 : 1,242,028.80 = 709,921.20 : x
  2. Step 2: Convert to fraction form
    828,019.20/1,242,028.80 = 709,921.20/x
  3. Step 3: Cross multiply
    828,019.20x = 1,242,028.80 × 709,921.20
  4. Step 4: Simplify right side
    828,019.20x = 881,742,576,130.56
  5. Step 5: Solve for x
    x = 881,742,576,130.56/828,019.20
  6. Step 6: Final answer
    x = 1,064,881.80

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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.