Home / 1,210,356.40-1,815,534.60-412,538.80

Finding the Fourth Proportional to 1,210,356.40, 1,815,534.60 and 412,538.80

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Solution

The fourth proportional to 1,210,356.40, 1,815,534.60 and 412,538.80 is: 618,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,356.40 : 1,815,534.60 = 412,538.80 : x
  2. Step 2: Convert to fraction form
    1,210,356.40/1,815,534.60 = 412,538.80/x
  3. Step 3: Cross multiply
    1,210,356.40x = 1,815,534.60 × 412,538.80
  4. Step 4: Simplify right side
    1,210,356.40x = 748,978,465,242.48
  5. Step 5: Solve for x
    x = 748,978,465,242.48/1,210,356.40
  6. Step 6: Final answer
    x = 618,808.20

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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.