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Finding the Fourth Proportional to 531,230.40, 796,845.60 and 487,927.80

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Solution

The fourth proportional to 531,230.40, 796,845.60 and 487,927.80 is: 731,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,230.40 : 796,845.60 = 487,927.80 : x
  2. Step 2: Convert to fraction form
    531,230.40/796,845.60 = 487,927.80/x
  3. Step 3: Cross multiply
    531,230.40x = 796,845.60 × 487,927.80
  4. Step 4: Simplify right side
    531,230.40x = 388,803,120,547.68
  5. Step 5: Solve for x
    x = 388,803,120,547.68/531,230.40
  6. Step 6: Final answer
    x = 731,891.70

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Double scale
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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.