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Finding the Fourth Proportional to 978,563.79, 1,467,946.45 and 338,866.29

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Solution

The fourth proportional to 978,563.79, 1,467,946.45 and 338,866.29 is: 508,334.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,563.79 : 1,467,946.45 = 338,866.29 : x
  2. Step 2: Convert to fraction form
    978,563.79/1,467,946.45 = 338,866.29/x
  3. Step 3: Cross multiply
    978,563.79x = 1,467,946.45 × 338,866.29
  4. Step 4: Simplify right side
    978,563.79x = 497,437,567,430.17
  5. Step 5: Solve for x
    x = 497,437,567,430.17/978,563.79
  6. Step 6: Final answer
    x = 508,334.33

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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.