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Finding the Fourth Proportional to 489,373.80, 734,060.70 and 347,656.20

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Solution

The fourth proportional to 489,373.80, 734,060.70 and 347,656.20 is: 521,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,373.80 : 734,060.70 = 347,656.20 : x
  2. Step 2: Convert to fraction form
    489,373.80/734,060.70 = 347,656.20/x
  3. Step 3: Cross multiply
    489,373.80x = 734,060.70 × 347,656.20
  4. Step 4: Simplify right side
    489,373.80x = 255,200,753,531.34
  5. Step 5: Solve for x
    x = 255,200,753,531.34/489,373.80
  6. Step 6: Final answer
    x = 521,484.30

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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.