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Finding the Fourth Proportional to 606,791.70, 909,449.55 and 429,349.86

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Solution

The fourth proportional to 606,791.70, 909,449.55 and 429,349.86 is: 643,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,791.70 : 909,449.55 = 429,349.86 : x
  2. Step 2: Convert to fraction form
    606,791.70/909,449.55 = 429,349.86/x
  3. Step 3: Cross multiply
    606,791.70x = 909,449.55 × 429,349.86
  4. Step 4: Simplify right side
    606,791.70x = 390,472,036,969.56
  5. Step 5: Solve for x
    x = 390,472,036,969.56/606,791.70
  6. Step 6: Final answer
    x = 643,502.60

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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.