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Finding the Fourth Proportional to 575,030.86, 861,440.80 and 321,542.52

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Solution

The fourth proportional to 575,030.86, 861,440.80 and 321,542.52 is: 481,695.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,030.86 : 861,440.80 = 321,542.52 : x
  2. Step 2: Convert to fraction form
    575,030.86/861,440.80 = 321,542.52/x
  3. Step 3: Cross multiply
    575,030.86x = 861,440.80 × 321,542.52
  4. Step 4: Simplify right side
    575,030.86x = 276,989,845,662.82
  5. Step 5: Solve for x
    x = 276,989,845,662.82/575,030.86
  6. Step 6: Final answer
    x = 481,695.62

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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.