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Finding the Fourth Proportional to 550,912.40, 826,368.60 and 486,630.80

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Solution

The fourth proportional to 550,912.40, 826,368.60 and 486,630.80 is: 729,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,912.40 : 826,368.60 = 486,630.80 : x
  2. Step 2: Convert to fraction form
    550,912.40/826,368.60 = 486,630.80/x
  3. Step 3: Cross multiply
    550,912.40x = 826,368.60 × 486,630.80
  4. Step 4: Simplify right side
    550,912.40x = 402,136,412,912.88
  5. Step 5: Solve for x
    x = 402,136,412,912.88/550,912.40
  6. Step 6: Final answer
    x = 729,946.20

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1.5x scale

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.