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Finding the Fourth Proportional to 479,887.86, 720,274.62 and 243,396.60

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Solution

The fourth proportional to 479,887.86, 720,274.62 and 243,396.60 is: 365,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,887.86 : 720,274.62 = 243,396.60 : x
  2. Step 2: Convert to fraction form
    479,887.86/720,274.62 = 243,396.60/x
  3. Step 3: Cross multiply
    479,887.86x = 720,274.62 × 243,396.60
  4. Step 4: Simplify right side
    479,887.86x = 175,312,393,574.29
  5. Step 5: Solve for x
    x = 175,312,393,574.29/479,887.86
  6. Step 6: Final answer
    x = 365,319.50

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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.