Home / 689,173.35-950,919.82-402,638.10

Finding the Fourth Proportional to 689,173.35, 950,919.82 and 402,638.10

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Solution

The fourth proportional to 689,173.35, 950,919.82 and 402,638.10 is: 555,559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,173.35 : 950,919.82 = 402,638.10 : x
  2. Step 2: Convert to fraction form
    689,173.35/950,919.82 = 402,638.10/x
  3. Step 3: Cross multiply
    689,173.35x = 950,919.82 × 402,638.10
  4. Step 4: Simplify right side
    689,173.35x = 382,876,549,577.14
  5. Step 5: Solve for x
    x = 382,876,549,577.14/689,173.35
  6. Step 6: Final answer
    x = 555,559.13

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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.