Home / 905,438.72-1,248,256.89-722,298.88

Finding the Fourth Proportional to 905,438.72, 1,248,256.89 and 722,298.88

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Solution

The fourth proportional to 905,438.72, 1,248,256.89 and 722,298.88 is: 995,776.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,438.72 : 1,248,256.89 = 722,298.88 : x
  2. Step 2: Convert to fraction form
    905,438.72/1,248,256.89 = 722,298.88/x
  3. Step 3: Cross multiply
    905,438.72x = 1,248,256.89 × 722,298.88
  4. Step 4: Simplify right side
    905,438.72x = 901,614,550,478.64
  5. Step 5: Solve for x
    x = 901,614,550,478.64/905,438.72
  6. Step 6: Final answer
    x = 995,776.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.