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Finding the Fourth Proportional to 478,582.56, 660,440.40 and 263,717.52

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Solution

The fourth proportional to 478,582.56, 660,440.40 and 263,717.52 is: 363,928.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,582.56 : 660,440.40 = 263,717.52 : x
  2. Step 2: Convert to fraction form
    478,582.56/660,440.40 = 263,717.52/x
  3. Step 3: Cross multiply
    478,582.56x = 660,440.40 × 263,717.52
  4. Step 4: Simplify right side
    478,582.56x = 174,169,704,395.81
  5. Step 5: Solve for x
    x = 174,169,704,395.81/478,582.56
  6. Step 6: Final answer
    x = 363,928.23

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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.