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Finding the Fourth Proportional to 477,999.20, 716,998.80 and 334,920.80

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Solution

The fourth proportional to 477,999.20, 716,998.80 and 334,920.80 is: 502,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,999.20 : 716,998.80 = 334,920.80 : x
  2. Step 2: Convert to fraction form
    477,999.20/716,998.80 = 334,920.80/x
  3. Step 3: Cross multiply
    477,999.20x = 716,998.80 × 334,920.80
  4. Step 4: Simplify right side
    477,999.20x = 240,137,811,695.04
  5. Step 5: Solve for x
    x = 240,137,811,695.04/477,999.20
  6. Step 6: Final answer
    x = 502,381.20

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Similar ratio
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1.5x scale

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.