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Finding the Fourth Proportional to 436,430.72, 654,646.08 and 120,887.73

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Solution

The fourth proportional to 436,430.72, 654,646.08 and 120,887.73 is: 181,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,430.72 : 654,646.08 = 120,887.73 : x
  2. Step 2: Convert to fraction form
    436,430.72/654,646.08 = 120,887.73/x
  3. Step 3: Cross multiply
    436,430.72x = 654,646.08 × 120,887.73
  4. Step 4: Simplify right side
    436,430.72x = 79,138,678,564.60
  5. Step 5: Solve for x
    x = 79,138,678,564.60/436,430.72
  6. Step 6: Final answer
    x = 181,331.60

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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.