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Finding the Fourth Proportional to 606,462.58, 908,955.96 and 429,020.74

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Solution

The fourth proportional to 606,462.58, 908,955.96 and 429,020.74 is: 643,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,462.58 : 908,955.96 = 429,020.74 : x
  2. Step 2: Convert to fraction form
    606,462.58/908,955.96 = 429,020.74/x
  3. Step 3: Cross multiply
    606,462.58x = 908,955.96 × 429,020.74
  4. Step 4: Simplify right side
    606,462.58x = 389,960,958,586.61
  5. Step 5: Solve for x
    x = 389,960,958,586.61/606,462.58
  6. Step 6: Final answer
    x = 643,009.10

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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.