Home / 1,221,392.80-1,831,214.40-511,055.20

Finding the Fourth Proportional to 1,221,392.80, 1,831,214.40 and 511,055.20

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Solution

The fourth proportional to 1,221,392.80, 1,831,214.40 and 511,055.20 is: 766,216.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,392.80 : 1,831,214.40 = 511,055.20 : x
  2. Step 2: Convert to fraction form
    1,221,392.80/1,831,214.40 = 511,055.20/x
  3. Step 3: Cross multiply
    1,221,392.80x = 1,831,214.40 × 511,055.20
  4. Step 4: Simplify right side
    1,221,392.80x = 935,851,641,434.88
  5. Step 5: Solve for x
    x = 935,851,641,434.88/1,221,392.80
  6. Step 6: Final answer
    x = 766,216.77

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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.