Home / 689,173.47-950,920.00-402,638.22

Finding the Fourth Proportional to 689,173.47, 950,920.00 and 402,638.22

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Solution

The fourth proportional to 689,173.47, 950,920.00 and 402,638.22 is: 555,559.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,173.47 : 950,920.00 = 402,638.22 : x
  2. Step 2: Convert to fraction form
    689,173.47/950,920.00 = 402,638.22/x
  3. Step 3: Cross multiply
    689,173.47x = 950,920.00 × 402,638.22
  4. Step 4: Simplify right side
    689,173.47x = 382,876,735,155.80
  5. Step 5: Solve for x
    x = 382,876,735,155.80/689,173.47
  6. Step 6: Final answer
    x = 555,559.31

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Double scale
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Similar ratio
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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.