Home / 729,090.90-1,005,741.09-427,226.58

Finding the Fourth Proportional to 729,090.90, 1,005,741.09 and 427,226.58

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Solution

The fourth proportional to 729,090.90, 1,005,741.09 and 427,226.58 is: 589,335.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,090.90 : 1,005,741.09 = 427,226.58 : x
  2. Step 2: Convert to fraction form
    729,090.90/1,005,741.09 = 427,226.58/x
  3. Step 3: Cross multiply
    729,090.90x = 1,005,741.09 × 427,226.58
  4. Step 4: Simplify right side
    729,090.90x = 429,679,326,246.17
  5. Step 5: Solve for x
    x = 429,679,326,246.17/729,090.90
  6. Step 6: Final answer
    x = 589,335.74

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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.