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Finding the Fourth Proportional to 602,960.20, 905,477.10 and 426,704.20

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Solution

The fourth proportional to 602,960.20, 905,477.10 and 426,704.20 is: 640,790.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,960.20 : 905,477.10 = 426,704.20 : x
  2. Step 2: Convert to fraction form
    602,960.20/905,477.10 = 426,704.20/x
  3. Step 3: Cross multiply
    602,960.20x = 905,477.10 × 426,704.20
  4. Step 4: Simplify right side
    602,960.20x = 386,370,881,573.82
  5. Step 5: Solve for x
    x = 386,370,881,573.82/602,960.20
  6. Step 6: Final answer
    x = 640,790.02

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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.