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Finding the Fourth Proportional to 893,503.72, 1,233,044.64 and 485,605.60

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Solution

The fourth proportional to 893,503.72, 1,233,044.64 and 485,605.60 is: 670,140.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,503.72 : 1,233,044.64 = 485,605.60 : x
  2. Step 2: Convert to fraction form
    893,503.72/1,233,044.64 = 485,605.60/x
  3. Step 3: Cross multiply
    893,503.72x = 1,233,044.64 × 485,605.60
  4. Step 4: Simplify right side
    893,503.72x = 598,773,382,233.98
  5. Step 5: Solve for x
    x = 598,773,382,233.98/893,503.72
  6. Step 6: Final answer
    x = 670,140.89

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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.