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Finding the Fourth Proportional to 666,425.62, 918,710.83 and 475,106.86

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Solution

The fourth proportional to 666,425.62, 918,710.83 and 475,106.86 is: 654,965.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,425.62 : 918,710.83 = 475,106.86 : x
  2. Step 2: Convert to fraction form
    666,425.62/918,710.83 = 475,106.86/x
  3. Step 3: Cross multiply
    666,425.62x = 918,710.83 × 475,106.86
  4. Step 4: Simplify right side
    666,425.62x = 436,485,814,204.75
  5. Step 5: Solve for x
    x = 436,485,814,204.75/666,425.62
  6. Step 6: Final answer
    x = 654,965.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.