Home / 710,908.20-1,064,979.90-394,799.40

Finding the Fourth Proportional to 710,908.20, 1,064,979.90 and 394,799.40

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Solution

The fourth proportional to 710,908.20, 1,064,979.90 and 394,799.40 is: 591,431.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,908.20 : 1,064,979.90 = 394,799.40 : x
  2. Step 2: Convert to fraction form
    710,908.20/1,064,979.90 = 394,799.40/x
  3. Step 3: Cross multiply
    710,908.20x = 1,064,979.90 × 394,799.40
  4. Step 4: Simplify right side
    710,908.20x = 420,453,425,532.06
  5. Step 5: Solve for x
    x = 420,453,425,532.06/710,908.20
  6. Step 6: Final answer
    x = 591,431.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.