Home / 1,221,454.80-1,831,307.40-511,117.20

Finding the Fourth Proportional to 1,221,454.80, 1,831,307.40 and 511,117.20

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Solution

The fourth proportional to 1,221,454.80, 1,831,307.40 and 511,117.20 is: 766,309.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,454.80 : 1,831,307.40 = 511,117.20 : x
  2. Step 2: Convert to fraction form
    1,221,454.80/1,831,307.40 = 511,117.20/x
  3. Step 3: Cross multiply
    1,221,454.80x = 1,831,307.40 × 511,117.20
  4. Step 4: Simplify right side
    1,221,454.80x = 936,012,710,627.28
  5. Step 5: Solve for x
    x = 936,012,710,627.28/1,221,454.80
  6. Step 6: Final answer
    x = 766,309.74

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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.