Home / 778,615.84-1,074,457.20-439,115.68

Finding the Fourth Proportional to 778,615.84, 1,074,457.20 and 439,115.68

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Solution

The fourth proportional to 778,615.84, 1,074,457.20 and 439,115.68 is: 605,961.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,615.84 : 1,074,457.20 = 439,115.68 : x
  2. Step 2: Convert to fraction form
    778,615.84/1,074,457.20 = 439,115.68/x
  3. Step 3: Cross multiply
    778,615.84x = 1,074,457.20 × 439,115.68
  4. Step 4: Simplify right side
    778,615.84x = 471,811,004,008.90
  5. Step 5: Solve for x
    x = 471,811,004,008.90/778,615.84
  6. Step 6: Final answer
    x = 605,961.22

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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.