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Finding the Fourth Proportional to 573,278.40, 859,917.60 and 440,827.20

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Solution

The fourth proportional to 573,278.40, 859,917.60 and 440,827.20 is: 661,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,278.40 : 859,917.60 = 440,827.20 : x
  2. Step 2: Convert to fraction form
    573,278.40/859,917.60 = 440,827.20/x
  3. Step 3: Cross multiply
    573,278.40x = 859,917.60 × 440,827.20
  4. Step 4: Simplify right side
    573,278.40x = 379,075,067,838.72
  5. Step 5: Solve for x
    x = 379,075,067,838.72/573,278.40
  6. Step 6: Final answer
    x = 661,240.80

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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.