Home / 928,011.67-1,280,654.38-520,113.39

Finding the Fourth Proportional to 928,011.67, 1,280,654.38 and 520,113.39

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Solution

The fourth proportional to 928,011.67, 1,280,654.38 and 520,113.39 is: 717,755.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,011.67 : 1,280,654.38 = 520,113.39 : x
  2. Step 2: Convert to fraction form
    928,011.67/1,280,654.38 = 520,113.39/x
  3. Step 3: Cross multiply
    928,011.67x = 1,280,654.38 × 520,113.39
  4. Step 4: Simplify right side
    928,011.67x = 666,085,486,847.84
  5. Step 5: Solve for x
    x = 666,085,486,847.84/928,011.67
  6. Step 6: Final answer
    x = 717,755.51

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Double scale
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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.