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Finding the Fourth Proportional to 611,092.80, 918,021.60 and 424,468.80

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Solution

The fourth proportional to 611,092.80, 918,021.60 and 424,468.80 is: 637,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,092.80 : 918,021.60 = 424,468.80 : x
  2. Step 2: Convert to fraction form
    611,092.80/918,021.60 = 424,468.80/x
  3. Step 3: Cross multiply
    611,092.80x = 918,021.60 × 424,468.80
  4. Step 4: Simplify right side
    611,092.80x = 389,671,526,926.08
  5. Step 5: Solve for x
    x = 389,671,526,926.08/611,092.80
  6. Step 6: Final answer
    x = 637,663.42

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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.