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Finding the Fourth Proportional to 477,758.40, 716,637.60 and 426,148.80

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Solution

The fourth proportional to 477,758.40, 716,637.60 and 426,148.80 is: 639,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,758.40 : 716,637.60 = 426,148.80 : x
  2. Step 2: Convert to fraction form
    477,758.40/716,637.60 = 426,148.80/x
  3. Step 3: Cross multiply
    477,758.40x = 716,637.60 × 426,148.80
  4. Step 4: Simplify right side
    477,758.40x = 305,394,253,274.88
  5. Step 5: Solve for x
    x = 305,394,253,274.88/477,758.40
  6. Step 6: Final answer
    x = 639,223.20

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.