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Finding the Fourth Proportional to 547,396.42, 755,762.50 and 489,936.23

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Solution

The fourth proportional to 547,396.42, 755,762.50 and 489,936.23 is: 676,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,396.42 : 755,762.50 = 489,936.23 : x
  2. Step 2: Convert to fraction form
    547,396.42/755,762.50 = 489,936.23/x
  3. Step 3: Cross multiply
    547,396.42x = 755,762.50 × 489,936.23
  4. Step 4: Simplify right side
    547,396.42x = 370,275,430,025.38
  5. Step 5: Solve for x
    x = 370,275,430,025.38/547,396.42
  6. Step 6: Final answer
    x = 676,430.13

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1.5x scale

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.