Home / 677,220.84-934,594.18-405,236.68

Finding the Fourth Proportional to 677,220.84, 934,594.18 and 405,236.68

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Solution

The fourth proportional to 677,220.84, 934,594.18 and 405,236.68 is: 559,244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,220.84 : 934,594.18 = 405,236.68 : x
  2. Step 2: Convert to fraction form
    677,220.84/934,594.18 = 405,236.68/x
  3. Step 3: Cross multiply
    677,220.84x = 934,594.18 × 405,236.68
  4. Step 4: Simplify right side
    677,220.84x = 378,731,842,650.52
  5. Step 5: Solve for x
    x = 378,731,842,650.52/677,220.84
  6. Step 6: Final answer
    x = 559,244.22

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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.