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Finding the Fourth Proportional to 508,420.80, 701,589.60 and 278,931.60

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Solution

The fourth proportional to 508,420.80, 701,589.60 and 278,931.60 is: 384,908.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,420.80 : 701,589.60 = 278,931.60 : x
  2. Step 2: Convert to fraction form
    508,420.80/701,589.60 = 278,931.60/x
  3. Step 3: Cross multiply
    508,420.80x = 701,589.60 × 278,931.60
  4. Step 4: Simplify right side
    508,420.80x = 195,695,509,671.36
  5. Step 5: Solve for x
    x = 195,695,509,671.36/508,420.80
  6. Step 6: Final answer
    x = 384,908.54

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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.