Home / 725,312.64-1,000,872.75-419,408.85

Finding the Fourth Proportional to 725,312.64, 1,000,872.75 and 419,408.85

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Solution

The fourth proportional to 725,312.64, 1,000,872.75 and 419,408.85 is: 578,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,312.64 : 1,000,872.75 = 419,408.85 : x
  2. Step 2: Convert to fraction form
    725,312.64/1,000,872.75 = 419,408.85/x
  3. Step 3: Cross multiply
    725,312.64x = 1,000,872.75 × 419,408.85
  4. Step 4: Simplify right side
    725,312.64x = 419,774,889,073.84
  5. Step 5: Solve for x
    x = 419,774,889,073.84/725,312.64
  6. Step 6: Final answer
    x = 578,750.27

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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.