Home / 859,485.52-1,287,456.81-503,420.05

Finding the Fourth Proportional to 859,485.52, 1,287,456.81 and 503,420.05

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Solution

The fourth proportional to 859,485.52, 1,287,456.81 and 503,420.05 is: 754,092.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,485.52 : 1,287,456.81 = 503,420.05 : x
  2. Step 2: Convert to fraction form
    859,485.52/1,287,456.81 = 503,420.05/x
  3. Step 3: Cross multiply
    859,485.52x = 1,287,456.81 × 503,420.05
  4. Step 4: Simplify right side
    859,485.52x = 648,131,571,663.04
  5. Step 5: Solve for x
    x = 648,131,571,663.04/859,485.52
  6. Step 6: Final answer
    x = 754,092.49

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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.