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Finding the Fourth Proportional to 633,385.80, 874,074.78 and 342,997.50

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Solution

The fourth proportional to 633,385.80, 874,074.78 and 342,997.50 is: 473,337.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,385.80 : 874,074.78 = 342,997.50 : x
  2. Step 2: Convert to fraction form
    633,385.80/874,074.78 = 342,997.50/x
  3. Step 3: Cross multiply
    633,385.80x = 874,074.78 × 342,997.50
  4. Step 4: Simplify right side
    633,385.80x = 299,805,463,219.80
  5. Step 5: Solve for x
    x = 299,805,463,219.80/633,385.80
  6. Step 6: Final answer
    x = 473,337.83

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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.