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Finding the Fourth Proportional to 606,479.04, 908,980.56 and 429,037.20

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Solution

The fourth proportional to 606,479.04, 908,980.56 and 429,037.20 is: 643,033.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,479.04 : 908,980.56 = 429,037.20 : x
  2. Step 2: Convert to fraction form
    606,479.04/908,980.56 = 429,037.20/x
  3. Step 3: Cross multiply
    606,479.04x = 908,980.56 × 429,037.20
  4. Step 4: Simplify right side
    606,479.04x = 389,986,474,316.83
  5. Step 5: Solve for x
    x = 389,986,474,316.83/606,479.04
  6. Step 6: Final answer
    x = 643,033.72

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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.