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Finding the Fourth Proportional to 611,146.80, 918,102.60 and 424,522.80

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Solution

The fourth proportional to 611,146.80, 918,102.60 and 424,522.80 is: 637,744.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,146.80 : 918,102.60 = 424,522.80 : x
  2. Step 2: Convert to fraction form
    611,146.80/918,102.60 = 424,522.80/x
  3. Step 3: Cross multiply
    611,146.80x = 918,102.60 × 424,522.80
  4. Step 4: Simplify right side
    611,146.80x = 389,755,486,439.28
  5. Step 5: Solve for x
    x = 389,755,486,439.28/611,146.80
  6. Step 6: Final answer
    x = 637,744.46

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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.