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Finding the Fourth Proportional to 540,043.20, 810,064.80 and 505,051.20

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Solution

The fourth proportional to 540,043.20, 810,064.80 and 505,051.20 is: 757,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,043.20 : 810,064.80 = 505,051.20 : x
  2. Step 2: Convert to fraction form
    540,043.20/810,064.80 = 505,051.20/x
  3. Step 3: Cross multiply
    540,043.20x = 810,064.80 × 505,051.20
  4. Step 4: Simplify right side
    540,043.20x = 409,124,199,317.76
  5. Step 5: Solve for x
    x = 409,124,199,317.76/540,043.20
  6. Step 6: Final answer
    x = 757,576.80

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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.