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Finding the Fourth Proportional to 489,693.02, 676,044.50 and 342,744.05

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Solution

The fourth proportional to 489,693.02, 676,044.50 and 342,744.05 is: 473,174.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,693.02 : 676,044.50 = 342,744.05 : x
  2. Step 2: Convert to fraction form
    489,693.02/676,044.50 = 342,744.05/x
  3. Step 3: Cross multiply
    489,693.02x = 676,044.50 × 342,744.05
  4. Step 4: Simplify right side
    489,693.02x = 231,710,224,816.28
  5. Step 5: Solve for x
    x = 231,710,224,816.28/489,693.02
  6. Step 6: Final answer
    x = 473,174.45

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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.