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Finding the Fourth Proportional to 496,550.50, 685,931.42 and 478,116.12

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Solution

The fourth proportional to 496,550.50, 685,931.42 and 478,116.12 is: 660,466.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,550.50 : 685,931.42 = 478,116.12 : x
  2. Step 2: Convert to fraction form
    496,550.50/685,931.42 = 478,116.12/x
  3. Step 3: Cross multiply
    496,550.50x = 685,931.42 × 478,116.12
  4. Step 4: Simplify right side
    496,550.50x = 327,954,869,116.49
  5. Step 5: Solve for x
    x = 327,954,869,116.49/496,550.50
  6. Step 6: Final answer
    x = 660,466.30

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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.