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Finding the Fourth Proportional to 478,582.25, 660,440.67 and 260,790.53

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Solution

The fourth proportional to 478,582.25, 660,440.67 and 260,790.53 is: 359,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,582.25 : 660,440.67 = 260,790.53 : x
  2. Step 2: Convert to fraction form
    478,582.25/660,440.67 = 260,790.53/x
  3. Step 3: Cross multiply
    478,582.25x = 660,440.67 × 260,790.53
  4. Step 4: Simplify right side
    478,582.25x = 172,236,672,362.86
  5. Step 5: Solve for x
    x = 172,236,672,362.86/478,582.25
  6. Step 6: Final answer
    x = 359,889.39

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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.