Home / 753,905.40-1,040,397.51-409,741.38

Finding the Fourth Proportional to 753,905.40, 1,040,397.51 and 409,741.38

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Solution

The fourth proportional to 753,905.40, 1,040,397.51 and 409,741.38 is: 565,447.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,905.40 : 1,040,397.51 = 409,741.38 : x
  2. Step 2: Convert to fraction form
    753,905.40/1,040,397.51 = 409,741.38/x
  3. Step 3: Cross multiply
    753,905.40x = 1,040,397.51 × 409,741.38
  4. Step 4: Simplify right side
    753,905.40x = 426,293,911,495.96
  5. Step 5: Solve for x
    x = 426,293,911,495.96/753,905.40
  6. Step 6: Final answer
    x = 565,447.48

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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.