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Finding the Fourth Proportional to 478,688.40, 718,032.60 and 393,067.35

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Solution

The fourth proportional to 478,688.40, 718,032.60 and 393,067.35 is: 589,601.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,688.40 : 718,032.60 = 393,067.35 : x
  2. Step 2: Convert to fraction form
    478,688.40/718,032.60 = 393,067.35/x
  3. Step 3: Cross multiply
    478,688.40x = 718,032.60 × 393,067.35
  4. Step 4: Simplify right side
    478,688.40x = 282,235,171,295.61
  5. Step 5: Solve for x
    x = 282,235,171,295.61/478,688.40
  6. Step 6: Final answer
    x = 589,601.03

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Similar ratio
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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.