Home / 716,290.07-988,459.61-394,000.16

Finding the Fourth Proportional to 716,290.07, 988,459.61 and 394,000.16

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Solution

The fourth proportional to 716,290.07, 988,459.61 and 394,000.16 is: 543,708.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,290.07 : 988,459.61 = 394,000.16 : x
  2. Step 2: Convert to fraction form
    716,290.07/988,459.61 = 394,000.16/x
  3. Step 3: Cross multiply
    716,290.07x = 988,459.61 × 394,000.16
  4. Step 4: Simplify right side
    716,290.07x = 389,453,237,581.24
  5. Step 5: Solve for x
    x = 389,453,237,581.24/716,290.07
  6. Step 6: Final answer
    x = 543,708.84

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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.