Home / 693,638.83-957,110.34-421,561.45

Finding the Fourth Proportional to 693,638.83, 957,110.34 and 421,561.45

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Solution

The fourth proportional to 693,638.83, 957,110.34 and 421,561.45 is: 581,687.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,638.83 : 957,110.34 = 421,561.45 : x
  2. Step 2: Convert to fraction form
    693,638.83/957,110.34 = 421,561.45/x
  3. Step 3: Cross multiply
    693,638.83x = 957,110.34 × 421,561.45
  4. Step 4: Simplify right side
    693,638.83x = 403,480,822,740.39
  5. Step 5: Solve for x
    x = 403,480,822,740.39/693,638.83
  6. Step 6: Final answer
    x = 581,687.19

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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.