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Finding the Fourth Proportional to 656,404.60, 984,555.70 and 256,967.80

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Solution

The fourth proportional to 656,404.60, 984,555.70 and 256,967.80 is: 385,431.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,404.60 : 984,555.70 = 256,967.80 : x
  2. Step 2: Convert to fraction form
    656,404.60/984,555.70 = 256,967.80/x
  3. Step 3: Cross multiply
    656,404.60x = 984,555.70 × 256,967.80
  4. Step 4: Simplify right side
    656,404.60x = 252,999,112,206.46
  5. Step 5: Solve for x
    x = 252,999,112,206.46/656,404.60
  6. Step 6: Final answer
    x = 385,431.66

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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.