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Finding the Fourth Proportional to 656,316.90, 984,584.70 and 256,970.70

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Solution

The fourth proportional to 656,316.90, 984,584.70 and 256,970.70 is: 385,498.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,316.90 : 984,584.70 = 256,970.70 : x
  2. Step 2: Convert to fraction form
    656,316.90/984,584.70 = 256,970.70/x
  3. Step 3: Cross multiply
    656,316.90x = 984,584.70 × 256,970.70
  4. Step 4: Simplify right side
    656,316.90x = 253,009,419,568.29
  5. Step 5: Solve for x
    x = 253,009,419,568.29/656,316.90
  6. Step 6: Final answer
    x = 385,498.86

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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.