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Finding the Fourth Proportional to 436,438.60, 654,657.90 and 426,070.60

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Solution

The fourth proportional to 436,438.60, 654,657.90 and 426,070.60 is: 639,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,438.60 : 654,657.90 = 426,070.60 : x
  2. Step 2: Convert to fraction form
    436,438.60/654,657.90 = 426,070.60/x
  3. Step 3: Cross multiply
    436,438.60x = 654,657.90 × 426,070.60
  4. Step 4: Simplify right side
    436,438.60x = 278,930,484,247.74
  5. Step 5: Solve for x
    x = 278,930,484,247.74/436,438.60
  6. Step 6: Final answer
    x = 639,105.90

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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.