Home / 731,345.90-1,009,231.84-404,653.72

Finding the Fourth Proportional to 731,345.90, 1,009,231.84 and 404,653.72

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Solution

The fourth proportional to 731,345.90, 1,009,231.84 and 404,653.72 is: 558,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,345.90 : 1,009,231.84 = 404,653.72 : x
  2. Step 2: Convert to fraction form
    731,345.90/1,009,231.84 = 404,653.72/x
  3. Step 3: Cross multiply
    731,345.90x = 1,009,231.84 × 404,653.72
  4. Step 4: Simplify right side
    731,345.90x = 408,389,418,398.45
  5. Step 5: Solve for x
    x = 408,389,418,398.45/731,345.90
  6. Step 6: Final answer
    x = 558,408.02

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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.