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Finding the Fourth Proportional to 675,126.40, 931,391.84 and 442,609.16

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Solution

The fourth proportional to 675,126.40, 931,391.84 and 442,609.16 is: 610,615.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,126.40 : 931,391.84 = 442,609.16 : x
  2. Step 2: Convert to fraction form
    675,126.40/931,391.84 = 442,609.16/x
  3. Step 3: Cross multiply
    675,126.40x = 931,391.84 × 442,609.16
  4. Step 4: Simplify right side
    675,126.40x = 412,242,561,777.51
  5. Step 5: Solve for x
    x = 412,242,561,777.51/675,126.40
  6. Step 6: Final answer
    x = 610,615.38

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Double scale
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Similar ratio
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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.