Home / 725,401.72-1,000,990.70-403,091.40

Finding the Fourth Proportional to 725,401.72, 1,000,990.70 and 403,091.40

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Solution

The fourth proportional to 725,401.72, 1,000,990.70 and 403,091.40 is: 556,230.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,401.72 : 1,000,990.70 = 403,091.40 : x
  2. Step 2: Convert to fraction form
    725,401.72/1,000,990.70 = 403,091.40/x
  3. Step 3: Cross multiply
    725,401.72x = 1,000,990.70 × 403,091.40
  4. Step 4: Simplify right side
    725,401.72x = 403,490,742,649.98
  5. Step 5: Solve for x
    x = 403,490,742,649.98/725,401.72
  6. Step 6: Final answer
    x = 556,230.75

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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.