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Finding the Fourth Proportional to 576,087.60, 864,131.40 and 387,130.80

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Solution

The fourth proportional to 576,087.60, 864,131.40 and 387,130.80 is: 580,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,087.60 : 864,131.40 = 387,130.80 : x
  2. Step 2: Convert to fraction form
    576,087.60/864,131.40 = 387,130.80/x
  3. Step 3: Cross multiply
    576,087.60x = 864,131.40 × 387,130.80
  4. Step 4: Simplify right side
    576,087.60x = 334,531,880,187.12
  5. Step 5: Solve for x
    x = 334,531,880,187.12/576,087.60
  6. Step 6: Final answer
    x = 580,696.20

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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.