Home / 721,074.98-1,079,782.04-432,705.32

Finding the Fourth Proportional to 721,074.98, 1,079,782.04 and 432,705.32

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Solution

The fourth proportional to 721,074.98, 1,079,782.04 and 432,705.32 is: 647,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,074.98 : 1,079,782.04 = 432,705.32 : x
  2. Step 2: Convert to fraction form
    721,074.98/1,079,782.04 = 432,705.32/x
  3. Step 3: Cross multiply
    721,074.98x = 1,079,782.04 × 432,705.32
  4. Step 4: Simplify right side
    721,074.98x = 467,227,433,483.41
  5. Step 5: Solve for x
    x = 467,227,433,483.41/721,074.98
  6. Step 6: Final answer
    x = 647,959.57

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1.5x scale

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.